Five bodies have been found in Noagaiya district, western Benghazi, local sources reported on Thursday.
The sources said the bodies of five men were found with signs of torture and gunshots to the head.
No comments were made by the eastern authorities.
Abduction and killing have increased in the war-ravaged city of Benghazi. In August 2017, seven bodies were found in a landfill in Zeet Street. In October 2016, 10 bodies were found in the same landfill. In July 2016, 14 bodies were found in a landfill in Lathi neighbourhood.
All these murder cases were registered against unknown perpetrators.
Observers say most of the cases belong to Dignity Operation opponents.