A river ‘died' overnight in Zambia after an acidic waste spill at a Chinese-owned mine

KITWE, Zambia (AP) — Authorities and environmentalists in Zambia fear the long-term impact of an acid spill at a Chinese-owned mine that contaminated a major river and could potentially affect millions of people after signs of pollution were detected at least 100 kilometers (60 miles) downstream.

The spill happened on Feb. 18 when a tailings dam that holds acidic waste from a copper mine in the north of the country collapsed, according to investigators from the Engineering Institution of Zambia.

The collapse allowed some 50 million liters of waste containing concentrated acid, dissolved solids and heavy metals to flow into a stream that links to the Kafue River, Zambia’s most important waterway, the engineering institution said.

“It is an environmental disaster really of catastrophic consequences,” said Chilekwa Mumba, an environmental activist who works in Zambia's Copperbelt Province.

China is the dominant player in copper mining in Zambia, a southern African nation which is among the world’s top 10 producers of copper, a key component in smartphones and other technology.

Zambian President Hakainde Hichilema called for help from experts and said the leak is a crisis that threatens people and wildlife along the Kafue, which runs for more than 1,500 kilometers (930 miles) through the heart of Zambia.

Authorities are still investigating the extent of the environmental damage.

An Associated Press reporter visited parts of the Kafue River, where dead fish could be seen washing up on the banks about 100 kilometers (60 miles) downstream from the mine run by Sino-Metals Leach Zambia, which is majority owned by the state-run China Nonferrous Metals Industry Group.

The Ministry of Water Development and Sanitation said the "devastating consequences" also included the destruction of crops along the river's banks. Authorities are concerned that ground water will be contaminated as the mining waste seeps into the earth or is carried to other areas.

“Prior to the 18th of February this was a vibrant and alive river,” said Sean Cornelius, who lives near the Kafue and said fish died and birdlife near him disappeared almost immediately. “Now everything is dead, it's like a totally dead river. Unbelievable. Overnight, this river died.”

About 60% of Zambia's 20 million people live in the Kafue River basin and depend on it in some way as a source of fishing, irrigation for agriculture and water for industry. The river supplies drinking water to about five million people, including in the capital, Lusaka.

The acid leak at the mine caused a complete shutdown of the water supply to the nearby city of Kitwe, home to an estimated 700,000 people.

The Zambian government has deployed the air force to drop hundreds of tons of lime into the river in an attempt to counteract the acid and roll back the damage. Speed boats have also been used to ride up and down the river, applying lime.

Government spokesperson Cornelius Mweetwa said the situation was very serious and Sino-Metals Leach Zambia would bear the costs of the cleanup operation.

Zhang Peiwen, the chairman of Sino-Metals Leach Zambia, met with government ministers this week and apologized for the acid spill, according to a transcript of his speech at the meeting released by his company.

“This disaster has rung a big alarm for Sino-Metals Leach and the mining industry,” he said. He said it “will go all out to restore the affected environment as quickly as possible."

The environmental impact of China's large mining interests in mineral-rich parts of Africa, which include Zambia's neighbors Congo and Zimbabwe, has often been criticized, even as the minerals are crucial to the countries' economies.

Chinese-owned copper mines have been accused of ignoring safety, labor and other regulations in Zambia as they strive to control its supply of the critical mineral, leading to some discontent with their presence. Zambia is also burdened with more than $4 billion in debt to China and had to restructure some of its loans from China and other nations after defaulting on repayments in 2020.

A smaller acid waste leak from another Chinese-owned mine in Zambia's copper belt was discovered days after the Sino-Metals accident, and authorities have accused the smaller mine of attempting to hide it.

Local police said a mine worker died at that second mine after falling into acid and alleged that the mine continued to operate after being instructed to stop its operations by authorities. Two Chinese mine managers have been arrested, police said.

Both mines have now halted their operations after orders from Zambian authorities, while many Zambians are angry.

“It really just brings out the negligence that some investors actually have when it comes to environmental protection,” said Mweene Himwinga, an environmental engineer who attended the meeting involving Zhang, government ministers, and others. “They don’t seem to have any concern at all, any regard at all. And I think it’s really worrying because at the end of the day, we as Zambian people, (it's) the only land we have.”

Zimba reported from Lusaka, Zambia.

AP Africa news: https://apnews.com/hub/africa

This image taken from video Wednesday, Feb. 19, 2025, shows the path of mine waste in the Mwambashi River, a tributary of the Kafue River, following a tailing dam breach at a Chinese-owned mine near Kitwe, Zambia. (AP Photo/Richard Kille )

This image taken from video Wednesday, Feb. 19, 2025, shows dead fish in the Kafue River near the town of Luanshya, Zambia. (AP Photo/Richard Kille )

This image taken from video Wednesday, Feb. 19, 2025, shows Sean Cornelius, a retired local resident, reviving his boat on the Kafue River near Kitwe, Zambia. (AP Photo/Richard Kille )

This image taken from video Wednesday, Feb. 19, 2025, shows farmer Juliet Balaya as she surveys the damage to her crop and fishpond caused by a mine waste spill near Kitwe. (AP Photo/Richard Kille )

This image taken from video Wednesday, Feb. 19, 2025, shows the path of mine waste in a river near a Sino-Metals Leach Zambia mine near Kitwe. (AP Photo/Richard Kille )

This image taken from video Wednesday, Feb. 19, 2025, shows the entrance to the Sino-Metals Leach Zambia mine complex near Kitwe. (AP Photo/Richard Kille )

This image taken from video Wednesday, Feb. 19, 2025, shows a breach at a tailing dam at a Sino-Metals Leach Zambia mine near Kitwe. (AP Photo/Richard Kille )

DUBAI, United Arab Emirates (AP) — U.S. President Donald Trump said Iran wants to negotiate with Washington after his threat to strike the Islamic Republic over its bloody crackdown on protesters, a move coming as activists said Monday the death toll in the nationwide demonstrations rose to at least 544.

Iran had no immediate reaction to the news, which came after the foreign minister of Oman — long an interlocutor between Washington and Tehran — traveled to Iran this weekend. It also remains unclear just what Iran could promise, particularly as Trump has set strict demands over its nuclear program and its ballistic missile arsenal, which Tehran insists is crucial for its national defense.

Meanwhile Monday, Iran called for pro-government demonstrators to head to the streets in support of the theocracy, a show of force after days of protests directly challenging the rule of 86-year-old Supreme Leader Ayatollah Ali Khamenei. Iranian state television aired chants from the crowd, who shouted “Death to America!” and “Death to Israel!”

Trump and his national security team have been weighing a range of potential responses against Iran including cyberattacks and direct strikes by the U.S. or Israel, according to two people familiar with internal White House discussions who were not authorized to comment publicly and spoke on condition of anonymity.

“The military is looking at it, and we’re looking at some very strong options,” Trump told reporters on Air Force One on Sunday night. Asked about Iran’s threats of retaliation, he said: “If they do that, we will hit them at levels that they’ve never been hit before.”

Trump said that his administration was in talks to set up a meeting with Tehran, but cautioned that he may have to act first as reports of the death toll in Iran mount and the government continues to arrest protesters.

“I think they’re tired of being beat up by the United States,” Trump said. “Iran wants to negotiate.”

He added: “The meeting is being set up, but we may have to act because of what’s happening before the meeting. But a meeting is being set up. Iran called, they want to negotiate.”

Iran through country's parliamentary speaker warned Sunday that the U.S. military and Israel would be “legitimate targets” if America uses force to protect demonstrators.

More than 10,600 people also have been detained over the two weeks of protests, said the U.S.-based Human Rights Activists News Agency, which has been accurate in previous unrest in recent years and gave the death toll. It relies on supporters in Iran crosschecking information. It said 496 of the dead were protesters and 48 were with security forces.

With the internet down in Iran and phone lines cut off, gauging the demonstrations from abroad has grown more difficult. The Associated Press has been unable to independently assess the toll. Iran’s government has not offered overall casualty figures.

Those abroad fear the information blackout is emboldening hard-liners within Iran’s security services to launch a bloody crackdown. Protesters flooded the streets in the country’s capital and its second-largest city on Saturday night into Sunday morning. Online videos purported to show more demonstrations Sunday night into Monday, with a Tehran official acknowledging them in state media.

In Tehran, a witness told the AP that the streets of the capital empty at the sunset call to prayers each night. By the Isha, or nighttime prayer, the streets are deserted.

Part of that stems from the fear of getting caught in the crackdown. Police sent the public a text message that warned: “Given the presence of terrorist groups and armed individuals in some gatherings last night and their plans to cause death, and the firm decision to not tolerate any appeasement and to deal decisively with the rioters, families are strongly advised to take care of their youth and teenagers.”

Another text, which claimed to come from the intelligence arm of the paramilitary Revolutionary Guard, also directly warned people not to take part in demonstrations.

“Dear parents, in view of the enemy’s plan to increase the level of naked violence and the decision to kill people, ... refrain from being on the streets and gathering in places involved in violence, and inform your children about the consequences of cooperating with terrorist mercenaries, which is an example of treason against the country,” the text warned.

The witness spoke to the AP on condition of anonymity due to the ongoing crackdown.

The demonstrations began Dec. 28 over the collapse of the Iranian rial currency, which trades at over 1.4 million to $1, as the country’s economy is squeezed by international sanctions in part levied over its nuclear program. The protests intensified and grew into calls directly challenging Iran’s theocracy.

Nikhinson reported from aboard Air Force One.

In this frame grab from video obtained by the AP outside Iran, a masked demonstrator holds a picture of Iran's Crown Prince Reza Pahlavi during a protest in Tehran, Iran, Friday, January. 9, 2026. (UGC via AP)

In this frame grab from footage circulating on social media from Iran shows protesters taking to the streets despite an intensifying crackdown as the Islamic Republic remains cut off from the rest of the world in Tehran, Iran, Friday, Jan. 9, 2026.(UGC via AP)

In this frame grab from footage circulating on social media from Iran showed protesters once again taking to the streets of Tehran despite an intensifying crackdown as the Islamic Republic remains cut off from the rest of the world in Tehran, Iran, Saturday Jan. 10, 2026. (UGC via AP)