Dozens of bodies have been recovered from the River Nile in the Sudanese capital, Khartoum, following a violent crackdown on pro-democracy protests, opposition activists say.
Doctors linked to the opposition say the 40 bodies are among 100 people believed killed since security forces attacked a protest camp on Monday.
Members of a feared paramilitary group are reported to be attacking civilians.
Sudan’s ruling Transitional Military Council (TMC) has vowed to investigate.
Residents in Khartoum have told the BBC they are living in fear as members of the Rapid Support Forces (RSF) roam the streets. The paramilitary unit – formerly known as the Janjaweed militia – gained notoriety in the Darfur conflict in western Sudan in 2003.
“Forty bodies of our noble martyrs were recovered from the river Nile yesterday,” the Central Committee of Sudanese Doctors said in a Facebook post on Wednesday.
An official from the group told the BBC that they had witnessed and verified the bodies in hospitals and that the death toll now stood at 100.