A Libyan security official said the leader of an al Qaeda-inspired group believed to be behind a recent wave of assassinations of policemen and judges has been killed, the Associated Press reports.

The official said on Tuesday, April 8, that the body of Ali bin Taher, who ran the Islamic State Army, was found on a farm near the Islamist stronghold of Derna, in eastern Libya.

The official said bin Taher was likely killed on Monday night. His body was riddled with bullets. The official spoke on condition of anonymity in line with regulations. He said there are no indications as to who was behind the killing, according to the AP.

Bin Taher was freed from prison after the 2011 uprising that ended Moammar Gadhafi's rule.