The United Nations is sending more peacekeepers to cities in Congo's North Kivu province to help combat rebel attacks in the country's east, an official said Wednesday, as Congo's army said it has regained control of two towns the rebels took over the weekend.

Roger Meece, special representative of the U.N. secretary-general and head of the U.N. mission in Congo, said that they are coordinating with the Congolese army to protect major cities, including Goma. The notoriously ill-equipped Congolese army has been struggling to contain the rebellion.

Meece also condemned any support by Rwanda for the M23 rebel movement.

"There is a lot of information that implicates support by Rwanda in the M23 rebel movement. It's an unacceptable situation and it must stop immediately," he said. Rwanda has denied the U.N. experts report that accuses it of helping to create, recruit for and arm Congo's latest insurgency.