The Libyan Interior Ministry condemned Saturday the armed attack on a patrol for the security department in Sabha, southern Libya, killing one policeman.

The ministry added that one of the attackers was injured and is receiving medical treatment in Sabha Medical Center, saying two others were detained.

Sabha security department announced the attack on the patrol at Khamsa October roundabout on Friday.

"While on duty checking papers of drivers at the roundabout, a group of outlaws opened fire on the patrol." The media office of the department said, adding that one attacker is receiving treatment and the rest are being searched for.

A massive security vacuum is sweeping through Sabha and the rest of southern Libya after Khalifa Haftar's self-styled army force has left after a brief control on the region.

Mayor of Sabha Hamid Al-Khayali blamed last week the security deterioration on Haftar's general command as they are not handling the violations on "fake checkpoints" which are robbing people under the forces' sight.