Probably the Allied Democratic Forces (ADF), an Islamist group that started out in Uganda over three decades ago. They don't appear to be affiliated with al-Qaeda or Islamic State — they just like killing infidels.
[Jpost] Armed men freed around 900 prisoners from a jail in Beni, east Democratic Republic of the Congo
...formerly the Congo Free State, Belgian Congo, Zaire, and who knows what else, not to be confused with the Brazzaville Congo aka Republic of Congo, which is much smaller and much more (for Africa) stable. DRC gave the world Patrice Lumumba and Joseph Mobutu, followed by years of tedious civil war. Its principle industry seems to be the production of corpses. With a population of about 74 million it has lots of raw material...
, in a coordinated attack in the early hours of Tuesday morning, the town's mayor said, blaming an Islamist holy warrior group operating in the area.
Related:
Beni: 2020-10-18 SRF condemns killing of 8 people in eastern Sudan's Kassala
Beni: 2020-09-27 Armed militia kills at least 15 people in western Ethiopia
Beni: 2020-09-08 Tax Payer funded National Public Radio (NPR) interview compares President Donald Trump to Mussolini
Beni: 2020-10-18 SRF condemns killing of 8 people in eastern Sudan's Kassala
Beni: 2020-09-27 Armed militia kills at least 15 people in western Ethiopia
Beni: 2020-09-08 Tax Payer funded National Public Radio (NPR) interview compares President Donald Trump to Mussolini
Related:
Democratic Republic of the Congo: 2020-08-31 Ten militants and five civilians killed in east Congo violence: army, local leader
Democratic Republic of the Congo: 2020-08-23 Suspected Islamist militants kill 13 in eastern Congo villages
Democratic Republic of the Congo: 2020-06-04 SPLA-IO kills 15 South Sudanese in Central Equatoria, says NAS
Democratic Republic of the Congo: 2020-08-31 Ten militants and five civilians killed in east Congo violence: army, local leader
Democratic Republic of the Congo: 2020-08-23 Suspected Islamist militants kill 13 in eastern Congo villages
Democratic Republic of the Congo: 2020-06-04 SPLA-IO kills 15 South Sudanese in Central Equatoria, says NAS
Related:
Allied Democratic Forces: 2020-08-31 Ten militants and five civilians killed in east Congo violence: army, local leader
Allied Democratic Forces: 2020-08-27 Congo army says Islamist militia kills 20 in east
Allied Democratic Forces: 2020-08-23 Suspected Islamist militants kill 13 in eastern Congo villages
Allied Democratic Forces: 2020-08-31 Ten militants and five civilians killed in east Congo violence: army, local leader
Allied Democratic Forces: 2020-08-27 Congo army says Islamist militia kills 20 in east
Allied Democratic Forces: 2020-08-23 Suspected Islamist militants kill 13 in eastern Congo villages