President Paul Kagame of Rwanda has urged Congolese authorities to negotiate with a violent rebel group that has seized key towns in eastern Congo in recent days, widening its control over the region which borders Rwanda.

Rebel forces backed by Rwanda have captured the town of Masisi in the east of the Democratic Republic of Congo, according to various reports. This is the second town seized by the M23 group in as many days in the mineral-rich North Kivu province.

Movement, aka M23, reportedly supported by Rwanda, captured the strategic town of Masisi in the Democratic Republic of Congo's North Kivu province from the army and pro-government militias on Saturday.

Masisi, with a population of around 40,000, which lies about 80 kilometers (50 miles) north of the North Kivu provincial capital Goma, is rich in agriculture, livestock, and minerals.

Civil society and a local politician say rebels with the M23 group have seized two key towns in eastern Congo as they advance in the volatile region