The Libyan minister blamed the increasing violence and casualties discovered in mass graves on what he called a "silence" from the council regarding previous violations by the militant group.
The internationally-recognised GNA has been under attack for over a year by forces loyal to Haftar, who has received backing from the Egypt and Russia. The commander launched an offensive to seize Tripoli from the GNA, starting a violent conflict that has killed at least 1,000 people.