(Reuters) -Rwanda-backed M23 rebels pressed on with their offensive in eastern Congo a day after the Congolese and Rwandan presidents called for an immediate ceasefire, entering the outskirts of the town Walikale late on Wednesday,

Rwanda has denied supporting M23. It says its military has been acting in self defence against Congo’s army and a militia founded by some of the perpetrators of the 1994 Rwandan genocide.

After talks in Qatar, the two countries’ presidents said they were committed to an unconditional truce between Congo’s army and a rebel group that Rwanda denies backing.