More violence in Libyan capital

For the second time this week, rival militia groups battled each other with anti-aircraft gunfire and grenades in several parts of Tripoli Thursday night.

Sources told Reuters that a heavily-armed group from Misrata was trying to take revenge for the killing of one of it's fighters in a smaller shootout on Tuesday.

At least one person was killed in the fighting, 12 others wounded.

Some of the wounded were treated at an nearby hospital.

The fighting shows how the government is struggling to contain militia groups that helped overthrow Muammar Gaddafi two years ago but who kept their guns after the NATO-backed uprising.