Shadowed by street violence and food shortages, a U.N. envoy is urging the government of Bolivia’s self-proclaimed interim president and supporters of self-exiled leader Evo Morales to begin talks on peacefully resolving a crisis that has already claimed 23 lives, an official said Sunday.

The negotiations proposed by envoy Jean Arnault would involve lawmakers from Morales’ political party, mobilized groups and representatives of interim leader Jeanine Áñez and be mediated by the United Nations and the Roman Catholic Church, the presidency minister, Jerjes Justiniano, said. No date had been set for talks.

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Supporters of former President Evo Morales stand next to a burning tire at a blockade along a road leading to the state-own Senkata gas filing plant in El Alto, Bolivia, Sunday, Nov. 17, 2019. (AP PhotoNatacha Pisarenko)

Shadowed by street violence and food shortages, a U.N. envoy is urging the government of Bolivia’s self-proclaimed interim president and supporters of self-exiled leader Evo Morales to begin talks on peacefully resolving a crisis that has already claimed 23 lives, an official said Sunday.

Supporters of former President Evo Morales stand next to a burning tire at a blockade along a road leading to the state-own Senkata gas filing plant in El Alto, Bolivia, Sunday, Nov. 17, 2019. Bolivia's political crisis turned deadly after security forces opened fire on supporters of Morales in Sacaba on Nov. 15, killing multiple people and injuring dozens. (AP PhotoNatacha Pisarenko)

A clash on Friday left nine pro-Morales coca growers dead and led to an ultimatum from protesters for Áñez to step down and withdraw troops that have been blocking them from entering central Cochabamba from the nearby town of Sacaba.

Soldiers guard the access to the "Yacimientos Petroliferos Fiscales Bolivianos" plant that has been blockeded by former President Evo Morales' supporters in El Alto, Bolivia, Sunday, Nov. 17, 2019. Bolivia's political crisis turned deadly after security forces opened fire on supporters of former President Evo Morales in Sacaba on Nov. 15, killing multiple people and injuring dozens. (AP PhotoNatacha Pisarenko)

Road blockades are causing food and fuel shortages in cities, particularly in the capital of La Paz. People say markets are short of fruits and vegetables.

Supporters of former President Evo Morales set up memorials for those killed on Saturday when government forces opened fire on them, in Sacaba, Bolivia, Sunday, Nov. 17, 2019. Bolivia's political crisis turned deadly after security forces opened fire on supporters of former President Evo Morales in Sacaba on Nov. 15, killing multiple people and injuring dozens. (AP PhotoJuan Karita)

“They want to hinder the interim administration,” said lawmaker Gonzalo Barrientos. “If an agreement is not reached, President Áñez could call elections by decree.”

Supporters of Evo Morales block the highway to access "Yacimientos Petroliferos Fiscales Bolivianos" plant, in El Alto, Bolivia, Sunday, Nov. 17, 2019. Bolivia's political crisis turned deadly after security forces opened fire on supporters of former President Evo Morales in Sacaba on Nov. 15, killing multiple people and injuring dozens. (AP PhotoNatacha Pisarenko)

Supporters of Evo Morales block the highway to access "Yacimientos Petroliferos Fiscales Bolivianos" plant, in El Alto, Bolivia, Sunday, Nov. 17, 2019. Bolivia's political crisis turned deadly after security forces opened fire on supporters of former President Evo Morales in Sacaba on Nov. 15, killing multiple people and injuring dozens. (AP PhotoNatacha Pisarenko)

Supporters of Evo Morales shout slogans as they block the highway to access "Yacimientos Petroliferos Fiscales Bolivianos" plant in El Alto, Bolivia, Sunday, Nov. 17, 2019. Bolivia's political crisis turned deadly after security forces opened fire on supporters of former President Evo Morales in Sacaba on Nov. 15, killing multiple people and injuring dozens. (AP PhotoNatacha Pisarenko)

Supporters of Evo Morales shout slogans as they block the highway to access "Yacimientos Petroliferos Fiscales Bolivianos" plant in El Alto, Bolivia, Sunday, Nov. 17, 2019. Bolivia's political crisis turned deadly after security forces opened fire on supporters of former President Evo Morales in Sacaba on Nov. 15, killing multiple people and injuring dozens. (AP PhotoNatacha Pisarenko)

Soldiers guard the road to the "Yacimientos Petroliferos Fiscales Bolivianos" plant that has been blocked by former President Evo Morales' supporters in El Alto, Bolivia, Sunday, Nov. 17, 2019. Bolivia's political crisis turned deadly after security forces opened fire on supporters of former President Evo Morales in Sacaba on Nov. 15, killing multiple people and injuring dozens. (AP PhotoNatacha Pisarenko)

Soldiers guard the road to the "Yacimientos Petroliferos Fiscales Bolivianos" plant that has been blocked by former President Evo Morales' supporters in El Alto, Bolivia, Sunday, Nov. 17, 2019. Bolivia's political crisis turned deadly after security forces opened fire on supporters of former President Evo Morales in Sacaba on Nov. 15, killing multiple people and injuring dozens. (AP PhotoNatacha Pisarenko)

Áñez, who declared herself president after Morales resigned Nov. 10 after weeks of protests against him over disputed election results, has said her priorities are to pacify Bolivia and hold new elections within three months. Morales’ supporters, who took to the streets after he quit under pressure from the military, are demanding the return of the leader, who was Bolivia’s first indigenous president.

Supporters of former President Evo Morales stand next to a burning tire at a blockade along a road leading to the state-own Senkata gas filing plant in El Alto, Bolivia, Sunday, Nov. 17, 2019. (AP PhotoNatacha Pisarenko)

Supporters of former President Evo Morales stand next to a burning tire at a blockade along a road leading to the state-own Senkata gas filing plant in El Alto, Bolivia, Sunday, Nov. 17, 2019. (AP PhotoNatacha Pisarenko)

A clash on Friday left nine pro-Morales coca growers dead and led to an ultimatum from protesters for Áñez to step down and withdraw troops that have been blocking them from entering central Cochabamba from the nearby town of Sacaba.

Thousands of Catholic faithful prayed for peace Sunday, which proved a day of relative calm in the crisis that began after the contentious Oct. 20 presidential election that Morales claimed he won outright, but his opponents contended was fraudulent. As protests by his foes grew, Morales resigned at the urging of the military and flew to Mexico, which granted him asylum.

At least 23 people have died since the crisis broke out, according to Bolivia’s Ombudsman’s office.

Supporters of former President Evo Morales stand next to a burning tire at a blockade along a road leading to the state-own Senkata gas filing plant in El Alto, Bolivia, Sunday, Nov. 17, 2019. Bolivia's political crisis turned deadly after security forces opened fire on supporters of Morales in Sacaba on Nov. 15, killing multiple people and injuring dozens. (AP PhotoNatacha Pisarenko)

Supporters of former President Evo Morales stand next to a burning tire at a blockade along a road leading to the state-own Senkata gas filing plant in El Alto, Bolivia, Sunday, Nov. 17, 2019. Bolivia's political crisis turned deadly after security forces opened fire on supporters of Morales in Sacaba on Nov. 15, killing multiple people and injuring dozens. (AP PhotoNatacha Pisarenko)

Road blockades are causing food and fuel shortages in cities, particularly in the capital of La Paz. People say markets are short of fruits and vegetables.

Pro-Morales lawmakers control almost two-thirds of the legislature and have called a session for Tuesday to demand the withdrawal of the military, said Sergio Choque, president of the Chamber of Deputies.

Members of Bolivia’s interim government fear pro-Morales legislators will reject Morales' resignation as president, paving the way for him home. Morales has said he was ousted by a coup d’etat.

Soldiers guard the access to the "Yacimientos Petroliferos Fiscales Bolivianos" plant that has been blockeded by former President Evo Morales' supporters in El Alto, Bolivia, Sunday, Nov. 17, 2019. Bolivia's political crisis turned deadly after security forces opened fire on supporters of former President Evo Morales in Sacaba on Nov. 15, killing multiple people and injuring dozens. (AP PhotoNatacha Pisarenko)

Soldiers guard the access to the "Yacimientos Petroliferos Fiscales Bolivianos" plant that has been blockeded by former President Evo Morales' supporters in El Alto, Bolivia, Sunday, Nov. 17, 2019. Bolivia's political crisis turned deadly after security forces opened fire on supporters of former President Evo Morales in Sacaba on Nov. 15, killing multiple people and injuring dozens. (AP PhotoNatacha Pisarenko)

“They want to hinder the interim administration,” said lawmaker Gonzalo Barrientos. “If an agreement is not reached, President Áñez could call elections by decree.”

Supporters of former President Evo Morales set up memorials for those killed on Saturday when government forces opened fire on them, in Sacaba, Bolivia, Sunday, Nov. 17, 2019. Bolivia's political crisis turned deadly after security forces opened fire on supporters of former President Evo Morales in Sacaba on Nov. 15, killing multiple people and injuring dozens. (AP PhotoJuan Karita)

Supporters of former President Evo Morales set up memorials for those killed on Saturday when government forces opened fire on them, in Sacaba, Bolivia, Sunday, Nov. 17, 2019. Bolivia's political crisis turned deadly after security forces opened fire on supporters of former President Evo Morales in Sacaba on Nov. 15, killing multiple people and injuring dozens. (AP PhotoJuan Karita)

Supporters of Evo Morales block the highway to access "Yacimientos Petroliferos Fiscales Bolivianos" plant, in El Alto, Bolivia, Sunday, Nov. 17, 2019. Bolivia's political crisis turned deadly after security forces opened fire on supporters of former President Evo Morales in Sacaba on Nov. 15, killing multiple people and injuring dozens. (AP PhotoNatacha Pisarenko)

Supporters of Evo Morales block the highway to access "Yacimientos Petroliferos Fiscales Bolivianos" plant, in El Alto, Bolivia, Sunday, Nov. 17, 2019. Bolivia's political crisis turned deadly after security forces opened fire on supporters of former President Evo Morales in Sacaba on Nov. 15, killing multiple people and injuring dozens. (AP PhotoNatacha Pisarenko)

Supporters of Evo Morales shout slogans as they block the highway to access "Yacimientos Petroliferos Fiscales Bolivianos" plant in El Alto, Bolivia, Sunday, Nov. 17, 2019. Bolivia's political crisis turned deadly after security forces opened fire on supporters of former President Evo Morales in Sacaba on Nov. 15, killing multiple people and injuring dozens. (AP PhotoNatacha Pisarenko)

Supporters of Evo Morales shout slogans as they block the highway to access "Yacimientos Petroliferos Fiscales Bolivianos" plant in El Alto, Bolivia, Sunday, Nov. 17, 2019. Bolivia's political crisis turned deadly after security forces opened fire on supporters of former President Evo Morales in Sacaba on Nov. 15, killing multiple people and injuring dozens. (AP PhotoNatacha Pisarenko)

Soldiers guard the road to the "Yacimientos Petroliferos Fiscales Bolivianos" plant that has been blocked by former President Evo Morales' supporters in El Alto, Bolivia, Sunday, Nov. 17, 2019. Bolivia's political crisis turned deadly after security forces opened fire on supporters of former President Evo Morales in Sacaba on Nov. 15, killing multiple people and injuring dozens. (AP PhotoNatacha Pisarenko)

Soldiers guard the road to the "Yacimientos Petroliferos Fiscales Bolivianos" plant that has been blocked by former President Evo Morales' supporters in El Alto, Bolivia, Sunday, Nov. 17, 2019. Bolivia's political crisis turned deadly after security forces opened fire on supporters of former President Evo Morales in Sacaba on Nov. 15, killing multiple people and injuring dozens. (AP PhotoNatacha Pisarenko)