Police fired tear gas Sunday at protesters holding out at Hong Kong Polytechnic University as overnight clashes resumed in the morning.

A large group of people arrived to try to clean up a debris-strewn roadway near the campus but were warned away by protesters.

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Protestors react as a blaze burns in the street during a confrontation with police at Hong Kong Polytechnic University in Hong Kong, Sunday, Nov. 17, 2019. Police have fired tear gas at protesters holding out at Hong Kong Polytechnic University as overnight clashes resumed in the morning. (AP PhotoKin Cheung)

Police fired tear gas Sunday at protesters holding out at Hong Kong Polytechnic University as overnight clashes resumed in the morning.

Protestors react as police fire tear gas at Hong Kong Polytechnic University in Hong Kong, Sunday, Nov. 17, 2019. Police have fired tear gas at protesters holding out at Hong Kong Polytechnic University as overnight clashes resumed in the morning. (AP PhotoNg Han Guan)

The faceoff came hours after intense overnight clashes in which the two sides exchanged tear gas and gasoline bombs that left fires blazing in the street. Many protesters retreated inside the Polytechnic campus, where they have barricaded entrances and set up narrow access control points.

Police in riot gear react as protestors throw molotov cocktails at Hong Kong Polytechnic University in Hong Kong, Sunday, Nov. 17, 2019. Police have fired tear gas at protesters holding out at Hong Kong Polytechnic University as overnight clashes resumed in the morning. (AP PhotoNg Han Guan)

There were scattered incidents of protesters arguing and clashing with people clearing roadways, and in one instance, throwing a gasoline bomb near City University of Hong Kong.

Police in riot gear react as protestors throw molotov cocktails at Hong Kong Polytechnic University in Hong Kong, Sunday, Nov. 17, 2019. Police have fired tear gas at protesters holding out at Hong Kong Polytechnic University as overnight clashes resumed in the morning. (AP PhotoNg Han Guan)

The bill has been withdrawn, but the protests have expanded into a wider resistance movement against what is perceived as the growing control of Hong Kong by Communist China, along with calls for full democracy for the territory.

A protestor hurls a molotov cocktail at police at Hong Kong Polytechnic University in Hong Kong, Sunday, Nov. 17, 2019. Police have fired tear gas at protesters holding out at Hong Kong Polytechnic University as overnight clashes resumed in the morning. (AP PhotoNg Han Guan)

A protestor hurls a molotov cocktail at police at Hong Kong Polytechnic University in Hong Kong, Sunday, Nov. 17, 2019. Police have fired tear gas at protesters holding out at Hong Kong Polytechnic University as overnight clashes resumed in the morning. (AP PhotoNg Han Guan)

Protestors react as police fire tear gas at Hong Kong Polytechnic University in Hong Kong, Sunday, Nov. 17, 2019. Police have fired tear gas at protesters holding out at Hong Kong Polytechnic University as overnight clashes resumed in the morning. (AP PhotoVincent Yu)

Protestors react as police fire tear gas at Hong Kong Polytechnic University in Hong Kong, Sunday, Nov. 17, 2019. Police have fired tear gas at protesters holding out at Hong Kong Polytechnic University as overnight clashes resumed in the morning. (AP PhotoVincent Yu)

A protestor hurls a molotov cocktail at police at Hong Kong Polytechnic University in Hong Kong, Sunday, Nov. 17, 2019. Police have fired tear gas at protesters holding out at Hong Kong Polytechnic University as overnight clashes resumed in the morning. (AP PhotoVincent Yu)

A protestor hurls a molotov cocktail at police at Hong Kong Polytechnic University in Hong Kong, Sunday, Nov. 17, 2019. Police have fired tear gas at protesters holding out at Hong Kong Polytechnic University as overnight clashes resumed in the morning. (AP PhotoVincent Yu)

A protestor hurls a molotov cocktail at police at Hong Kong Polytechnic University in Hong Kong, Sunday, Nov. 17, 2019. Police have fired tear gas at protesters holding out at Hong Kong Polytechnic University as overnight clashes resumed in the morning. (AP PhotoVincent Yu)

A protestor hurls a molotov cocktail at police at Hong Kong Polytechnic University in Hong Kong, Sunday, Nov. 17, 2019. Police have fired tear gas at protesters holding out at Hong Kong Polytechnic University as overnight clashes resumed in the morning. (AP PhotoVincent Yu)

Protestors react as police fire tear gas at Hong Kong Polytechnic University in Hong Kong, Sunday, Nov. 17, 2019. Police have fired tear gas at protesters holding out at Hong Kong Polytechnic University as overnight clashes resumed in the morning. (AP PhotoVincent Yu)

Protestors react as police fire tear gas at Hong Kong Polytechnic University in Hong Kong, Sunday, Nov. 17, 2019. Police have fired tear gas at protesters holding out at Hong Kong Polytechnic University as overnight clashes resumed in the morning. (AP PhotoVincent Yu)

A protestor hurls a molotov cocktail at police at Hong Kong Polytechnic University in Hong Kong, Sunday, Nov. 17, 2019. Police have fired tear gas at protesters holding out at Hong Kong Polytechnic University as overnight clashes resumed in the morning. (AP PhotoVincent Yu)

A protestor hurls a molotov cocktail at police at Hong Kong Polytechnic University in Hong Kong, Sunday, Nov. 17, 2019. Police have fired tear gas at protesters holding out at Hong Kong Polytechnic University as overnight clashes resumed in the morning. (AP PhotoVincent Yu)

A protestor prepares to hurl a molotov cocktail at police at Hong Kong Polytechnic University in Hong Kong, Sunday, Nov. 17, 2019. Police have fired tear gas at protesters holding out at Hong Kong Polytechnic University as overnight clashes resumed in the morning. (AP PhotoVincent Yu)

A protestor prepares to hurl a molotov cocktail at police at Hong Kong Polytechnic University in Hong Kong, Sunday, Nov. 17, 2019. Police have fired tear gas at protesters holding out at Hong Kong Polytechnic University as overnight clashes resumed in the morning. (AP PhotoVincent Yu)

Protestors duck near a tear gas canister fired by police at Hong Kong Polytechnic University in Hong Kong, Sunday, Nov. 17, 2019. Police have fired tear gas at protesters holding out at Hong Kong Polytechnic University as overnight clashes resumed in the morning. (AP PhotoVincent Yu)

Protestors duck near a tear gas canister fired by police at Hong Kong Polytechnic University in Hong Kong, Sunday, Nov. 17, 2019. Police have fired tear gas at protesters holding out at Hong Kong Polytechnic University as overnight clashes resumed in the morning. (AP PhotoVincent Yu)

A protestor hurls a molotov cocktail at police at Hong Kong Polytechnic University in Hong Kong, Sunday, Nov. 17, 2019. Police have fired tear gas at protesters holding out at Hong Kong Polytechnic University as overnight clashes resumed in the morning. (AP PhotoVincent Yu)

A protestor hurls a molotov cocktail at police at Hong Kong Polytechnic University in Hong Kong, Sunday, Nov. 17, 2019. Police have fired tear gas at protesters holding out at Hong Kong Polytechnic University as overnight clashes resumed in the morning. (AP PhotoVincent Yu)

A protestor wearing a helmet and body armor gestures during unrest near Hong Kong Polytechnic University in Hong Kong, Sunday, Nov. 17, 2019. Police have fired tear gas at protesters holding out at Hong Kong Polytechnic University as overnight clashes resumed in the morning. (AP PhotoVincent Yu)

A protestor wearing a helmet and body armor gestures during unrest near Hong Kong Polytechnic University in Hong Kong, Sunday, Nov. 17, 2019. Police have fired tear gas at protesters holding out at Hong Kong Polytechnic University as overnight clashes resumed in the morning. (AP PhotoVincent Yu)

A protestor hurls an object near Hong Kong Polytechnic University in Hong Kong, Sunday, Nov. 17, 2019. Police have fired tear gas at protesters holding out at Hong Kong Polytechnic University as overnight clashes resumed in the morning. (AP PhotoVincent Yu)

A protestor hurls an object near Hong Kong Polytechnic University in Hong Kong, Sunday, Nov. 17, 2019. Police have fired tear gas at protesters holding out at Hong Kong Polytechnic University as overnight clashes resumed in the morning. (AP PhotoVincent Yu)

A protestor hurls a molotov cocktail near Hong Kong Polytechnic University in Hong Kong, Sunday, Nov. 17, 2019. Police have fired tear gas at protesters holding out at Hong Kong Polytechnic University as overnight clashes resumed in the morning. (AP PhotoVincent Yu)

A protestor hurls a molotov cocktail near Hong Kong Polytechnic University in Hong Kong, Sunday, Nov. 17, 2019. Police have fired tear gas at protesters holding out at Hong Kong Polytechnic University as overnight clashes resumed in the morning. (AP PhotoVincent Yu)

Protestors toss tear gas canisters fired by police at Hong Kong Polytechnic University in Hong Kong, Sunday, Nov. 17, 2019. Police have fired tear gas at protesters holding out at Hong Kong Polytechnic University as overnight clashes resumed in the morning. (AP PhotoVincent Yu)

Protestors toss tear gas canisters fired by police at Hong Kong Polytechnic University in Hong Kong, Sunday, Nov. 17, 2019. Police have fired tear gas at protesters holding out at Hong Kong Polytechnic University as overnight clashes resumed in the morning. (AP PhotoVincent Yu)

People walk past a highway barricaded by protestors near Hong Kong Polytechnic University in Hong Kong, Sunday, Nov. 17, 2019. Police have fired tear gas at protesters holding out at Hong Kong Polytechnic University as overnight clashes resumed in the morning. (AP PhotoVincent Yu)

People walk past a highway barricaded by protestors near Hong Kong Polytechnic University in Hong Kong, Sunday, Nov. 17, 2019. Police have fired tear gas at protesters holding out at Hong Kong Polytechnic University as overnight clashes resumed in the morning. (AP PhotoVincent Yu)

Riot police lined up a few hundred meters (yards) away and shot several volleys of tear gas at the protesters, who sheltered behind a wall of umbrellas across an entire street.

Protestors react as a blaze burns in the street during a confrontation with police at Hong Kong Polytechnic University in Hong Kong, Sunday, Nov. 17, 2019. Police have fired tear gas at protesters holding out at Hong Kong Polytechnic University as overnight clashes resumed in the morning. (AP PhotoKin Cheung)

Protestors react as a blaze burns in the street during a confrontation with police at Hong Kong Polytechnic University in Hong Kong, Sunday, Nov. 17, 2019. Police have fired tear gas at protesters holding out at Hong Kong Polytechnic University as overnight clashes resumed in the morning. (AP PhotoKin Cheung)

The faceoff came hours after intense overnight clashes in which the two sides exchanged tear gas and gasoline bombs that left fires blazing in the street. Many protesters retreated inside the Polytechnic campus, where they have barricaded entrances and set up narrow access control points.

Protesters, who occupied several major campuses for much of last week, have largely retreated, except for a contingent at Polytechnic. That group is also blocking access to the nearby Cross-Harbour Tunnel, one of the three main road tunnels that link Hong Kong Island with the rest of the city.

Elsewhere, workers and volunteers — including a group of Chinese soldiers who came out from their barracks — cleared roads of debris Saturday as most of the protesters melted away.

Protestors react as police fire tear gas at Hong Kong Polytechnic University in Hong Kong, Sunday, Nov. 17, 2019. Police have fired tear gas at protesters holding out at Hong Kong Polytechnic University as overnight clashes resumed in the morning. (AP PhotoNg Han Guan)

Protestors react as police fire tear gas at Hong Kong Polytechnic University in Hong Kong, Sunday, Nov. 17, 2019. Police have fired tear gas at protesters holding out at Hong Kong Polytechnic University as overnight clashes resumed in the morning. (AP PhotoNg Han Guan)

There were scattered incidents of protesters arguing and clashing with people clearing roadways, and in one instance, throwing a gasoline bomb near City University of Hong Kong.

The city’s anti-government protests have been raging for more than five months.

They were sparked by a government decision to submit legislation that would have allowed the extradition of criminal suspects to the mainland. Activists saw it as an erosion of Hong Kong’s autonomy under the “one country, two systems” formula implemented in 1997, when Britain returned the territory to China.

Police in riot gear react as protestors throw molotov cocktails at Hong Kong Polytechnic University in Hong Kong, Sunday, Nov. 17, 2019. Police have fired tear gas at protesters holding out at Hong Kong Polytechnic University as overnight clashes resumed in the morning. (AP PhotoNg Han Guan)

Police in riot gear react as protestors throw molotov cocktails at Hong Kong Polytechnic University in Hong Kong, Sunday, Nov. 17, 2019. Police have fired tear gas at protesters holding out at Hong Kong Polytechnic University as overnight clashes resumed in the morning. (AP PhotoNg Han Guan)

The bill has been withdrawn, but the protests have expanded into a wider resistance movement against what is perceived as the growing control of Hong Kong by Communist China, along with calls for full democracy for the territory.

Police in riot gear react as protestors throw molotov cocktails at Hong Kong Polytechnic University in Hong Kong, Sunday, Nov. 17, 2019. Police have fired tear gas at protesters holding out at Hong Kong Polytechnic University as overnight clashes resumed in the morning. (AP PhotoNg Han Guan)

Police in riot gear react as protestors throw molotov cocktails at Hong Kong Polytechnic University in Hong Kong, Sunday, Nov. 17, 2019. Police have fired tear gas at protesters holding out at Hong Kong Polytechnic University as overnight clashes resumed in the morning. (AP PhotoNg Han Guan)

A protestor hurls a molotov cocktail at police at Hong Kong Polytechnic University in Hong Kong, Sunday, Nov. 17, 2019. Police have fired tear gas at protesters holding out at Hong Kong Polytechnic University as overnight clashes resumed in the morning. (AP PhotoNg Han Guan)

A protestor hurls a molotov cocktail at police at Hong Kong Polytechnic University in Hong Kong, Sunday, Nov. 17, 2019. Police have fired tear gas at protesters holding out at Hong Kong Polytechnic University as overnight clashes resumed in the morning. (AP PhotoNg Han Guan)

Protestors react as police fire tear gas at Hong Kong Polytechnic University in Hong Kong, Sunday, Nov. 17, 2019. Police have fired tear gas at protesters holding out at Hong Kong Polytechnic University as overnight clashes resumed in the morning. (AP PhotoVincent Yu)

Protestors react as police fire tear gas at Hong Kong Polytechnic University in Hong Kong, Sunday, Nov. 17, 2019. Police have fired tear gas at protesters holding out at Hong Kong Polytechnic University as overnight clashes resumed in the morning. (AP PhotoVincent Yu)

A protestor hurls a molotov cocktail at police at Hong Kong Polytechnic University in Hong Kong, Sunday, Nov. 17, 2019. Police have fired tear gas at protesters holding out at Hong Kong Polytechnic University as overnight clashes resumed in the morning. (AP PhotoVincent Yu)

A protestor hurls a molotov cocktail at police at Hong Kong Polytechnic University in Hong Kong, Sunday, Nov. 17, 2019. Police have fired tear gas at protesters holding out at Hong Kong Polytechnic University as overnight clashes resumed in the morning. (AP PhotoVincent Yu)

A protestor hurls a molotov cocktail at police at Hong Kong Polytechnic University in Hong Kong, Sunday, Nov. 17, 2019. Police have fired tear gas at protesters holding out at Hong Kong Polytechnic University as overnight clashes resumed in the morning. (AP PhotoVincent Yu)

A protestor hurls a molotov cocktail at police at Hong Kong Polytechnic University in Hong Kong, Sunday, Nov. 17, 2019. Police have fired tear gas at protesters holding out at Hong Kong Polytechnic University as overnight clashes resumed in the morning. (AP PhotoVincent Yu)

Protestors react as police fire tear gas at Hong Kong Polytechnic University in Hong Kong, Sunday, Nov. 17, 2019. Police have fired tear gas at protesters holding out at Hong Kong Polytechnic University as overnight clashes resumed in the morning. (AP PhotoVincent Yu)

Protestors react as police fire tear gas at Hong Kong Polytechnic University in Hong Kong, Sunday, Nov. 17, 2019. Police have fired tear gas at protesters holding out at Hong Kong Polytechnic University as overnight clashes resumed in the morning. (AP PhotoVincent Yu)

A protestor hurls a molotov cocktail at police at Hong Kong Polytechnic University in Hong Kong, Sunday, Nov. 17, 2019. Police have fired tear gas at protesters holding out at Hong Kong Polytechnic University as overnight clashes resumed in the morning. (AP PhotoVincent Yu)

A protestor hurls a molotov cocktail at police at Hong Kong Polytechnic University in Hong Kong, Sunday, Nov. 17, 2019. Police have fired tear gas at protesters holding out at Hong Kong Polytechnic University as overnight clashes resumed in the morning. (AP PhotoVincent Yu)

A protestor prepares to hurl a molotov cocktail at police at Hong Kong Polytechnic University in Hong Kong, Sunday, Nov. 17, 2019. Police have fired tear gas at protesters holding out at Hong Kong Polytechnic University as overnight clashes resumed in the morning. (AP PhotoVincent Yu)

A protestor prepares to hurl a molotov cocktail at police at Hong Kong Polytechnic University in Hong Kong, Sunday, Nov. 17, 2019. Police have fired tear gas at protesters holding out at Hong Kong Polytechnic University as overnight clashes resumed in the morning. (AP PhotoVincent Yu)

Protestors duck near a tear gas canister fired by police at Hong Kong Polytechnic University in Hong Kong, Sunday, Nov. 17, 2019. Police have fired tear gas at protesters holding out at Hong Kong Polytechnic University as overnight clashes resumed in the morning. (AP PhotoVincent Yu)

Protestors duck near a tear gas canister fired by police at Hong Kong Polytechnic University in Hong Kong, Sunday, Nov. 17, 2019. Police have fired tear gas at protesters holding out at Hong Kong Polytechnic University as overnight clashes resumed in the morning. (AP PhotoVincent Yu)

A protestor hurls a molotov cocktail at police at Hong Kong Polytechnic University in Hong Kong, Sunday, Nov. 17, 2019. Police have fired tear gas at protesters holding out at Hong Kong Polytechnic University as overnight clashes resumed in the morning. (AP PhotoVincent Yu)

A protestor hurls a molotov cocktail at police at Hong Kong Polytechnic University in Hong Kong, Sunday, Nov. 17, 2019. Police have fired tear gas at protesters holding out at Hong Kong Polytechnic University as overnight clashes resumed in the morning. (AP PhotoVincent Yu)

A protestor wearing a helmet and body armor gestures during unrest near Hong Kong Polytechnic University in Hong Kong, Sunday, Nov. 17, 2019. Police have fired tear gas at protesters holding out at Hong Kong Polytechnic University as overnight clashes resumed in the morning. (AP PhotoVincent Yu)

A protestor wearing a helmet and body armor gestures during unrest near Hong Kong Polytechnic University in Hong Kong, Sunday, Nov. 17, 2019. Police have fired tear gas at protesters holding out at Hong Kong Polytechnic University as overnight clashes resumed in the morning. (AP PhotoVincent Yu)

A protestor hurls an object near Hong Kong Polytechnic University in Hong Kong, Sunday, Nov. 17, 2019. Police have fired tear gas at protesters holding out at Hong Kong Polytechnic University as overnight clashes resumed in the morning. (AP PhotoVincent Yu)

A protestor hurls an object near Hong Kong Polytechnic University in Hong Kong, Sunday, Nov. 17, 2019. Police have fired tear gas at protesters holding out at Hong Kong Polytechnic University as overnight clashes resumed in the morning. (AP PhotoVincent Yu)

A protestor hurls a molotov cocktail near Hong Kong Polytechnic University in Hong Kong, Sunday, Nov. 17, 2019. Police have fired tear gas at protesters holding out at Hong Kong Polytechnic University as overnight clashes resumed in the morning. (AP PhotoVincent Yu)

A protestor hurls a molotov cocktail near Hong Kong Polytechnic University in Hong Kong, Sunday, Nov. 17, 2019. Police have fired tear gas at protesters holding out at Hong Kong Polytechnic University as overnight clashes resumed in the morning. (AP PhotoVincent Yu)

Protestors toss tear gas canisters fired by police at Hong Kong Polytechnic University in Hong Kong, Sunday, Nov. 17, 2019. Police have fired tear gas at protesters holding out at Hong Kong Polytechnic University as overnight clashes resumed in the morning. (AP PhotoVincent Yu)

Protestors toss tear gas canisters fired by police at Hong Kong Polytechnic University in Hong Kong, Sunday, Nov. 17, 2019. Police have fired tear gas at protesters holding out at Hong Kong Polytechnic University as overnight clashes resumed in the morning. (AP PhotoVincent Yu)

People walk past a highway barricaded by protestors near Hong Kong Polytechnic University in Hong Kong, Sunday, Nov. 17, 2019. Police have fired tear gas at protesters holding out at Hong Kong Polytechnic University as overnight clashes resumed in the morning. (AP PhotoVincent Yu)

People walk past a highway barricaded by protestors near Hong Kong Polytechnic University in Hong Kong, Sunday, Nov. 17, 2019. Police have fired tear gas at protesters holding out at Hong Kong Polytechnic University as overnight clashes resumed in the morning. (AP PhotoVincent Yu)