The Democratic Republic of Congo's army said on Monday an Islamist militia which claims links to Islamic State (IS) was responsible for two blasts in the eastern city of Beni, as the mayor closed schools, churches and markets for 48 hours.

The army said Sunday's attacks bore the signature of the Allied Democratic Forces (ADF), which has used improvised explosive devices in the past.

The ADF, which originally hails from Uganda, has been accused of killing thousands of people since 2014, most in massacres in remote villages carried out with machetes, hatchets and firearms.