At a summit in the Kenyan capital, Nairobi, on Thursday, the regional leaders resolved that such a force should be mobilised with immediate effect.

There are no details yet on the size of the proposed force.

All armed groups operating in eastern DR Congo should unconditionally participate in a political process to resolve their grievances, a statement from the summit says.

Those that do not will be dealt with militarily, it adds.

Dozens of rebel groups operate in the mineral-rich region, some of which originate from neighbouring countries or are associated with DR Congo's neighbours.

The last few weeks have seen a resurgence of one of the biggest fighting groups, the M23 rebels.

The group has attacked government army positions, captured villages in Rutshuru territory forcing hundreds of people to flee their homes.

The Ugandan army has been operating in Ituri province since November last year.

It has been chasing the Allied Democratic Forces - a rebel group that originated in Uganda and which it accuses of staging a series of bombings in the country last year.

DR Congo joined the seven-member East African Community regional bloc last month, in what some analysts see as a move towards seeking joint solutions to its security challenges in the east.