Sudan’s paramilitary Rapid Support Forces and allies on Sunday signed a charter that paved the way for the establishment of a parallel government, as Sudan's army made advances recently against the rival groups.

Sudan's paramilitary Rapid Support Forces (RSF) and a coalition of political and armed groups have signed a founding charter to establish a parallel government in the war-ravaged country, sources said Sunday.

The RSF has seized most of the western Darfur region and swathes of the Kordofan region in an almost-two-year war, but is being pushed back from central Sudan by the Sudanese army.

Sudan's paramilitary Rapid Support Forces and its allies have agreed to set up a parallel government, sources said Sunday, despite warnings such a move could further fragment the war-ravaged country.