Central African Republic protesters lay corpses at UN's door after clashes

A local official says 21 people were shot dead including two children

Protesters have put at least 16 corpses in front of the headquarters of the UN in the Central African Republic (CAR).

They called for an end to violence, saying the corpses were of civilians killed on Tuesday in clashes between UN troops and armed groups in a neighbourhood of the capital, Bangui.

The UN mission in CAR has not yet commented on the protest.

Its troops began an operation on Sunday to disarm vigilantes in the PK5 neighbourhood of the capital Bangui.

A self-styled Muslim militia is based there, purporting to protect residents.

CAR was plunged into turmoil in 2013 when Muslim rebels from the Seleka umbrella group seized power in the majority-Christian country. A band of mostly Christian militias, called the anti-balaka, rose up to counter the Seleka.

A new government elected in 2016 has failed to bring peace to the mineral-rich nation which has been unstable since its independence from France in 1960.

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Why did the clashes erupt?

The UN mission, known by the acronym Minusca, says it launched the military operation after residents complained about extortion and violence by the armed group.

It said in a statement on Tuesday that its soldiers had been attacked: "For four hours, the Minusca force had to push back heavily armed elements of criminal gangs who deliberately opened fire on the international forces, who fired back."

A demonstrator told Reuters news agency the UN forces had shot at civilians during Tuesday's operation.

"We, ourselves, no longer understand anything," he said. "Does their mission consist of shooting at civilians?"

UN troops and Red Cross workers removed corpses left by the demonstrators

Mayor Atahirou Balla Dodo of the Bangui district in which the PK5 neighbourhood is located told Reuters a total of 21 people had been killed in the clashes.

He said protesters had taken 17 bodies from the morgue but had left four others, two women and two children.

UN troops and the local Red Cross team later removed the bodies.

Medical charity Medecins Sans Frontieres (MSF), which operates one of the main hospitals in Bangui, said it had treated more than 40 people for gunshot wounds on Tuesday.