TRIPOLI - Anti-aircraft gunfire and grenade blasts erupted in several parts of Tripoli late on Thursday, the second time this week that the Libyan capital has been rocked by fighting between rival militia groups.
A security source told Reuters a heavily-armed group had entered the capital to take revenge for one of its fighters who was killed in a shootout in Tripoli on Tuesday.
Two years after the fall of Muammar Gaddafi, militia that helped oust him now control large part of the North African country and regularly fight each other.
On Tuesday, rival gunmen battled for hours on the capital's streets. Three people were wounded and one later died - prompting the revenge attack, the source said.