Four people protesting against a United Nations peacekeeping mission have been killed in the Congolese city of Uvira when troops fired warning shots which hit an electric cable that fell on them, officials said.

The protests had mostly fizzled out on Wednesday in the cities of Goma and Butembo but had spread to Uvira, in South Kivu province, where crowds threw rocks at a MONUSCO compound. 

"There was an isolated demonstration in Uvira. We had a tragedy because of the fall of an electric cable... indirectly related to the protest," South Kivu governor Theo Ngwabidje Kasi told Reuters. 

"I have asked for investigations to know if the bullet was fired by MONUSCO or by our forces," he said, adding that preliminary information suggested it had come from within the MONUSCO base. 

Calm had been restored by mid-afternoon, he said. 

Three UN peacekeepers and at least 12 civilians were killed on Tuesday in protests against the mission in eastern Democratic Republic of Congo, known as MONUSCO, which protesters accuse of failing to protect them from militia violence. 

UN chief condemns violence

UN Secretary-General Antonio Guterres condemned the violence and called on the government to bring the perpetrators to justice. 

A UN spokesman also said the United Nations would investigate reports that peacekeepers had been responsible for civilian deaths. A Reuters reporter saw UN peacekeepers shoot dead two protesters in Goma. 

The UN mission, which has around 12,400 troops in the country and costs more than $1 billion per year, has been in the process of gradually withdrawing for several years. 

The UN children's agency said on Wednesday that many children had been manipulated into joining the protests and were exposed to violence.

"UNICEF condemns the instrumentalisation of children for political purposes and calls on authorities, members of civil society and parents to keep children away from protests in order to protect them," said Grant Leaity, UNICEF representative in the DRC, in a statement.

Source: Reuters