Islamist rebels hacked to death at least 22 civilians, 13 of them women, in an overnight raid in the DR Congo's troubled Beni region bordering Uganda, local officials said Sunday.

Members of the Allied Democratic Forces (ADF), an Islamist-rooted militia with its origins in Uganda, killed the civilians using machetes, Beni region administrator Donat Kibwana told AFP.

"Teams have been mobilised to recover the bodies and bring them back for dignified funerals," he said.

The victims were farmers and included 13 women, said Noella Katsongerwaki, Beni's civil society president.

Dozens of armed groups have operated in the DR Congo's restive east for decades despite a UN peacekeeping presence, but recent attacks have been blamed on the ADF.

More than 100 people have died in assaults blamed on the group since November 5.

Troops from the UN's stabilisation force in the region are working with DR Congo forces against the militia at the end of October
Troops from the UN's stabilisation force in the region are working with DR Congo forces against the militia at the end of October AFP / John WESSELS

The latest incident came a day after six civilians were killed in an attack in the eastern region's main city of Beni.

DR Congo forces launched operations against the militia in the region in late October.

The ADF has retaliated by carrying out massacres, in an apparent bid to discourage civilians from helping the military.

Mounting anger over militia violence has sparked demonstrations in Beni, where local people accuse the UN peacekeeping force MONUSCO of failing to protect them.

MONUSCO has said it will carry out joint operations with the Congolese army to crackdown on the ADF.

MONUSCO, one of the world's biggest UN peacekeeping operations, today comprises 15,500 military personnel and observers, 1,300 police and at least 4,000 civilians.

But it has struggled to make progress in a vast country beset by armed groups as well as an Ebola epidemic, poverty and poor governance.

Uganda