The fighting early Thursday near the eastern city of Goma came a day after the UN said armed groups in the region slaughtered over 200 people including scores of children between April and September.
Julien Paluku, governor of the resource-rich North Kivu province whose capital is Goma, added that "a few" members of the DR Congo government forces (FARDC) were wounded in the clashes, along with the 113 rebels killed, up sharply from a previous toll.
Government spokesman Lambert Mende had said earlier that "51 bodies (of rebels) wearing Rwandan army uniforms have been collected".
Mende added that three rebels were wounded, a captain of the group was caught and that artillery, including rocket launches, were found.
According to the army s spokesman for North Kivu, Lieutenant Colonel Olivier Hamuli, one FARDC commander died in the clashes.
M23 military spokesman Lieutenant Colonel Vianney Kazarama for his part refused to release a toll.
The M23, which has dubbed its armed wing the Congolese Revolutionary Army, was launched by former fighters in an ethnic Tutsi rebel group that was integrated into the Congolese military under a 2009 peace deal whose terms the mutineers claim were never fully implemented.
The United Nations has accused neighbouring Rwanda and Uganda of backing the rebels, but both countries deny this.
Rights groups accuse M23 of human rights abuses and of unleashing a fresh cycle of violence by the region s complex web of armed groups.
Its leader, Sultani Makenga, a former colonel in the DR Congo army, is accused of masterminding killings, sex attacks and abductions and recruiting child soldiers.
A rebel statement accused the DR Congo army of launching several offensives against M23 positions in the Rugari area, about 30 kilometres (20 miles) from Goma not far from the Rwandan border.
It said the fighting was a breach of an already shaky ceasefire.
Via Dunya News
