The authorities in the Central African Republic have issued a warning to a militia suspected of killing at least 34 villagers earlier this week.
The 3R group, which represents the Fulani people, has been given 72 hours to give up those suspected of carrying out the attack, which is said to have been in retaliation for the killing of a person from the Fulani community.
The United Nations is sending patrols to secure the area.
The 3R militia is one of the 14 groups which signed a peace deal earlier this year, which now appears to be unravelling.
Dozens killed in Central African Republic - UN
More than 26 people have been killed in an attack by an armed group on two villages in the Central African Republic (CAR), the UN’s peacekeeping mission in the country said.
The attack took place in the villages of Koundjili and Djoumjoum, the head of the mission, Mankeur Ndiaye, said in a tweet on Wednesday.
A key peace deal to resolve the conflict in the Central African Republic (CAR) is at risk of collapsing less than a month after it was agreed, news agency AFP reports.
Three militia groups which were among the 14 armed groups that signed the Khartoum Agreement with President Faustin-Archange Touadera, disagreed with the make-up of the new government announced on Sunday.
The Democratic Front of the Central African People (FPDC) said it had, "resolved purely and simply to withdraw from the peace process", adding that the government was "far from being inclusive".
Another large militia, the Patriotic Movement for Central Africa (MPC), citing the same reason, said it considered the accord was "void".
The militias were not happy that the central government held onto sensitive key posts, while six of the 14 armed groups obtained no post at all, AFP reports.
CAR has been unstable since its independence from France in 1960.
It was plunged into turmoil in 2013 when mainly 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 Seleka.
Seleka handed power to a transitional government in 2014 under international pressure but months of violence followed and the country was effectively partitioned, in spite of the presence of a UN peacekeeping force and a French mission.
The country is undergoing an internationally supervised transition involving a constitutional referendum as well as presidential and parliamentary elections.
Analysis: What does the CAR peace deal achieve?
President Faustin Touadera signed a peace deal with 14 rebel groups
BBC Africa security correspondent
It has not been smooth sailing. Only a few days into
the talks – a fortnight ago – the prospect of peace was further threatened as
the government rejected the rebels' demands for amnesty and inclusion in a new
The armed groups say immunity will encourage the laying down
of arms but critics say the real aim is to avoid prosecution at the
International Criminal Court (ICC).
The chairman of the AU Commission Moussa Faki
welcomed the agreement, saying he was happy for the people of the Central African Republic (see earlier post).
this population who have borne the brunt of the conflict, with an estimated 2.4 million people in need of humanitarian assistance.
It is now likely that
many of those who caused their predicament will not be held responsible.
Some elements of the anti-Balaka might also feel like they
have not benefited as much, having been the only rebels publicly targeted so
far by the ICC Prosecutor Fatou Bensouda.
The parties involved in this deal will have to work against a poor recent record in which there have been up to seven previous
failed attempts at peace agreements since 2013.
The rebel groups still control large parts of the country
and their presence is unlikely to be challenged now.
Opposition parties were not involved in the talks and they
will move further down the political pecking order as the rebels get more
involved in government.
Previous attempts by the AU to broker talks in Bangui, the
capital of CAR, came to nothing.
While it worked with the UN as the mediators
of this round of talks, the process in Khartoum was actually kick-started by
Russia – which has been increasingly involved in the CAR in recent years.
Moscow has mining interests in the African nation and provides security for
Sudan, the host of the talks, will be hoping that the
current success of the negotiations will improve its image, having been diplomatically
and economically stranded for years.
CAR peace a 'spirit of reconciliation'
In the Central African Republic there is a strong sense of hope that six years of fighting could be coming to an end. Thousands of people have been killed in the conflict but a new peace deal between the government and 14 armed groups has now been agreed. It is expected to be signed on Tuesday in the capital Bangui. Smail Chergui, the African Union Commissioner for Peace and Security, helped negotiate the peace deal.
(Pic: Smail Chergui, AU commissioner for Peace and Security ; Credit: AFP)
The Central African Republic has been called the worst place in the world to be a child.
Healthcare is a particular concern.
When the BBC travelled to Kaga Bandoro, 400km (249 miles) from the capital Bangui, they found just one doctor to serve 200,000 people.
The UN co-ordinator in the area, Bitumba Tipo-Tipo Mayoyo, told the BBC that doctors were too scared to work there.
Amnesty calls for UN 'neglect' probe in CAR
BBC World Service
The rights group, Amnesty International, has called on the United Nations to investigate reports that UN peacekeers in the Central African Republic left their posts as civilians were being massacred at a refugee camp last month.
Amnesty said as many as a 100 people were killed when an armed group attacked the camp at Alindao in the south.
According to multiple witnesses, peacekeepers from the UN mission Minusca retreated in an armoured vehicle, leaving up to 18,000 people unprotected.
On Thursday, the UN Security Council renewed Minusca's mandate for another year.