In Benghazi at least nine people have been killed and almost 50 wounded in clashes between the military and militants. The violence erupted after the army had pursued a suspect into an area where Islamist militant group Ansar al-Sharia operates its own checkpoints.
Locals later stormed the groups base setting it ablaze. Ansar al-Sharia was blamed for the attack on the US consulate in the city a year ago when the US ambassador and three other Americans were killed.
Libyan special forces have been deployed by the government, army leave cancelled and residents ordered to stay off the streets.
The latest violence is more evidence say analysts of how troops are struggling to establish control in Libya as militants and militias who fought in the uprising against Muammar Gaddafi refuse to disarm.
The storming of Ansar al-Shari’s base comes one week after 40 people were killed in clashes in Tripoli when protesters marched to a militia base demanding they leave the capital.