M23 rebels look on in Kibumba in eastern Democratic Republic of Congo, on December 23, 2022. (Photo: Glody Murhabazi| AFP).

The rebel group had not consulted about the deal before its completion, according to Mr Kanyuka.

Despite agreeing to the ceasefire, the M23 said they would “not hesitate” to defend themselves – and the civilian populations under their control – from the army or government-allied militia.

The ceasefire began on Monday midday, according to a statement by US National Security Council Spokesperson Adrienne Watson.

It comes one week ahead of hotly contested elections in the central African country. Authorities have said voting cannot take place in the eastern territories of Rutshuru and Masisi, as they are in the grip of the conflict with the M23.

And on Tuesday, the electoral commission announced that those displaced by the conflict will also not be able to vote.

Previous ceasefire deals between the rebels and army have been breached, leading to fresh fighting.