Rival Libyan groups exchanged gunfire in the Libyan capital on Saturday, wounding civilians and raising fears of all-out conflict in a country facing a grave political crisis.
With combat continuing, "we are having difficulties moving around", Oussama Ali, spokesman for the Tripoli ambulance service, said on Libya's Al Ahrar television.
He said there were "injured among civilians", but did not give a number. Local media reported fatalities but no official toll had been released.
Numerous images on social media purported to show cars burnt-out in the fighting and bullet-riddled buildings.
The fighting broke out in various districts of Tripoli between groups armed with both heavy and light weapons, as two rival governments yet again vie for power in the oil-rich but impoverished North African country.
Gunshots and explosions rang through the darkened streets of Tripoli throughout Friday night, an AFP correspondent said.