The UN Security Council will meet behind closed doors on Tuesday to discuss the crisis in Sudan after security forces violently broke up weeks of protests against military rule, leaving more than 30 dead.
Britain and Germany requested the talks on Monday, diplomats said, after UN Secretary-General Antonio Guterres criticized Sudan's security personnel for using excessive force.
Guterres said in a statement that he was "alarmed" by reports that security forces had opened fire inside a hospital in Khartoum and called for an independent investigation into deaths from the violence.
A committee of Sudanese doctors, which is close to the protesters, said more than 30 people were killed and dozens wounded in the violence.
"What is clear to us is that there was use of excessive force by the security forces on civilians. People have died. People have been injured," said UN spokesman Stephane Dujarric.
Guterres urged Sudanese authorities to facilitate an independent investigation of the deaths and ensure that those responsible are held accountable.
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UN human rights chief Michelle Bachelet said in a separate statement that she deplored the "apparent use of excessive force in the protest camps" and called on security forces to "immediately halt such attacks." The military council denied its forces violently dispersed the sit-in in front of army headquarters.
The UN chief renewed his call for negotiations to resume on a peaceful transfer of power to a civilian-led authority.
Negotiations between protest leaders and Sudan's ruling military council have broken down, as the two sides have failed to agree on whether a planned transitional body would be headed by a civilian or a military figure.
The military council has ruled the country since the ouster of president Omar al-Bashir on April 11, after months of protests against his authoritarian rule.
Sudan's generals, backed by key Arab powers, have resisted calls from African and Western governments to hand over the reins of power.