Rwandan-backed M23 called its first public meeting on Thursday since seizing the Congolese city of Goma after deadly clashes, as its fighters advanced towards another regional capital.

After capturing Goma, the main city in North Kivu province, last week, the M23 and Rwandan troops launched a new offensive on Wednesday in a neighbouring province.

Breaking a ceasefire it had declared unilaterally, the fighters seized the South Kivu mining town of Nyabibwe, about 100 kilometres (60 miles) from the regional capital Bukavu.