A Libyan military court looking into the assassination of a rebel commander has summoned the former transitional leader as witness.
The rebel commander, Abdel-Fattah Younis, was killed in July 2011 by his comrades while in custody after he was arrested on suspicion of treason.
The highest profile assassination during Libya's civil war raised fears of revenge attacks, shaking confidence in the rebel forces and exposing disarray among their ranks before the ouster of dictator Moammar Gadhafi.
Younis was interior minister under Gadhafi before defecting to join the rebels.
A court official said judges decided Wednesday to summon the former head of Libya's National Transitional Council, Mustafa Abdul-Jalil, to testify, because he was in office when other rebels questioned Younis' loyalty. There are 23 defendants in the murder trial in Benghazi.