Khartoum: Darfur rebels on Friday accused Sudan's army of killing 27 people in a week-long campaign of air and ground assaults on their positions, as peace efforts in the region continued to flounder.

Sudan's army dismissed the accusation, saying its only recent action had been a single attack on a non-rebel armed group that had been harassing travellers in another part of the territory.

A series of ceasefires, peace deals and negotiations has failed to stop fighting in Sudan's western Darfur region which surged in 2003 when mostly non-Arab rebels took up arms against the government.

The International Criminal Court has issued area warrants against Sudan's President Omar Hassan Al Bashir to face charges of masterminding genocide and war crimes during Khartoum's brutal campaign to crush the uprising. Khartoum refuses to recognise the court.