Khartoum - Sudan's ruling military council restarted talks late on Sunday with an alliance of protest and opposition groups that is pushing for a civilian-led transition to democracy.
Both sides have signalled that they are close to an agreement over a three-year transition, but more than six hours of overnight talks at the presidential palace in Khartoum failed to produce a breakthrough.
The negotiations are due to resume on Monday evening.
The Transitional Military Council (TMC) had suspended the talks late on Wednesday after two outbreaks of violence around protest sites in Khartoum.
Street protests and a sit-in outside the Defence Ministry have continued since the army ousted and arrested former President Omar al-Bashir on April 11.