Malaysia as the Asean chair next year should take the lead in condemning not only the genocide in Gaza but also the one in Myanmar.

Fighting has been concentrated in the capital, much of which has become a war zone plagued by looting and clashes.

The negotiations with the RSF, which began in early May, had produced a declaration of commitments to protect civilians and two short-term ceasefire deals, although those deals were repeatedly violated.

The truce was brokered and is being remotely monitored by Saudi Arabia and the US, which say it has been violated by both sides but has still allowed for the delivery of aid to an estimated two million people.

More than 300,000 people have crossed Sudan's borders since the fighting erupted, with the largest numbers heading north to Egypt from Khartoum or west to Chad from Darfur.

The sound of clashes and artillery fire could be heard in Bahri, one of the three cities around the confluence of the Blue Nile and White Nile rivers that make up Sudan's greater capital.

The army has been pounding targets across the three cities as it tries to root out RSF forces that have taken control of large residential areas and strategic sites since early in the conflict that erupted on April 15.

Multiple truce deals have been declared, without effect, since fighting erupted between army and paramilitary forces on April 15 in the poverty-stricken country with a history of political instability.

Khader Adnan, who was awaiting trial, was found unconscious in his cell and taken to a hospital, where he was declared dead after efforts to revive him, reports say.

The fighting has killed hundreds of people and left some neighbourhoods of greater Khartoum in ruins, prompting thousands of foreigners and Sudanese to flee.

The fighting has pitted forces loyal to army chief Abdel Fattah al-Burhan against those of his former deputy Mohamed Hamdan Daglo, who commands the RSF.

A truce previously agreed until May 30 for the Islamic festival of Eid had held until now.