According to a statement issued on Saturday by the media office of anti-Daesh organization Al-Bonyan Al-Marsous, said an arrested Daesh militant, who witnessed the attack, provided details of the incident and the militants involved.
The beheaded bodies in orange uniforms were found with their hands cuffed to the backs, the group said. They included 20 Egyptians and one African. The killings were documented in a grisly video released online by the extremists that shocked Egypt and led it to launch punitive airstrikes.
Libya has descended into chaos since a popular 2011 uprising that toppled and later killed long-time dictator Muammar Qaddafi.