Libyan militia
Libyan forces foil ambush, lose 8 men in Sirte battle - officials
Militants have staged several attacks including suicide bombings from behind the front lines in Sirte.
Armed conflict and disputes have left Libya’s oil installations under the control of different factions.
Brent crude futures LCOc1 were trading at $46.32 per barrel at 0107 GMT, down 27 cents.
Britain and France led international efforts to help oust Libya’s then-leader Muammar Gaddafi in early 2011.
The Libyan brigades, mostly from the city of Misrata, say they are close to victory in Sirte.
Forces allied with Libya’s unity government began a campaign two months ago to free Sirte from Islamic State.
At least another 25 people had been wounded and victims' remains were still being gathered.
For months, the US has had a small number of forces rotating in and out of Libya.
Libya’s unity government has been warning that Isis could seize most of the country if action isn’t taken.
A video released by the militant group showed gunmen shooting a man, dressed in an orange jumpsuit.
Two governments, one in the east, the other in Tripoli, are fighting for control of the North African state.
Abdulla al-Thinni said after he left Parliament, gunmen followed his entourage and opened fire.
The UN asked the Criminal Court to probe crimes committed since the beginning of the uprising.
There was no immediate claim for the attack or comments from Tripoli officials.
UN Special Envoy Bernardino Leon condemned the air strikes as an attempt to prevent peace talks.
The talks have been extended for two more days despite renewed fighting in the capital Tripoli.
Rival governments and parliaments are battling for control of the North African country and its oil.
Limited damage was caused and there were no casualties.
Health officials say around 48 people have been killed and 80 wounded in the past 10 days.