Libyan Prime Minister Abdullah al-Thinni and his cabinet have been sworn in to office, days after lawmakers approved of his cabinet line-up.

The premier took the oath during a brief ceremony on Sunday in the eastern city of Tobruk.

The ceremony comes a week after the Libyan parliament approved the prime minister’s 13-member cabinet after rejecting his previous line-up.

Thinni, who has been Libya’s acting prime minister since March, stepped down after the June elections and the new parliament reappointed him at the beginning of September.

His administration has not yet managed to restore law and order in the North African country, which is still grappling with insecurity nearly three years after the fall of former dictator Muammar Gaddafi in a popular uprising.

Al-Thinni is struggling with a rival administration in Tripoli, which is backed by militia groups from Misrata.

Since the country’s revolution and the killing of its former ruler, Libya has been witnessing numerous clashes between government forces and rival militant groups that refuse to lay down arms.

The armed militant groups are currently fighting among themselves in an attempt to dominate politics and the country’s vast oil resources.