Libya's former prime minister will be put on trial for crimes he allegedly committed during the rule of Muammar Gaddafi.

Al-Baghdadi al-Mahmoudi was extradited from Tunisia, which he fled to in September 2011 after the fall of Tripoli to rebel forces.

"Al-Baghdadi al-Mahmoudi will appear tomorrow [Monday] on the occasion of a first case" against him, Taha Baara, the public prosecutor's spokesman, said in Tripoli on Sunday, adding that Mahmoudi faces charges of "prejudicial acts against the security of the state".