A five-member fact-finding committee has been tasked to investigate the cause of the explosion and the extent of damage.
The blast occurred weeks after a fuel tanker blast in another southern Libya city killed five people and injured 50.
Military sources told Peoples Gazette that the explosion rocked the entrance of 27 Task Force Brigade in Buni Gari after being triggered by a lightning.
The area was cordoned off and the debris successfully evacuated during the 13-hour operation.
Six persons were confirmed dead in the explosion.
Separate but similar accidents across three regions leave a trail of human and property destructions.
