Fighting picked up on Friday in eastern Democratic Republic of Congo between the M23 rebel group and the Congolese army, a rebel leader, military sources and civilians told Reuters.
Clashes had subsided for about a week since the M23's latest offensive in late October. The rebel group has had a major resurgence this year, forcing tens of thousands of people to flee their homes, after its first big insurrection in 2012/13.
The fighting has caused a diplomatic rift between Congo and neighbouring Rwanda, which Congo accuses of backing the M23. Rwanda denies this.
