Two explosions occurred on Sunday in the Libyan city of Benghazi outside buildings used by the judiciary.
One of the blasts was caused by anti-tank explosives placed under a car near a courthouse.
The BBC reports 10 people were wounded, but there were no deaths.
One of the courthouses was in Maidaan al-Shajara square where many protests against former leader Muammar Gaddafi were held in 2011.
A BBC correspondent in Tripoli said the explosions happened as people were breaking their fast for Ramadan and no one would have been on the streets.
On Saturday, about 1200 prisoners escaped from a jail in the city, and offices linked to the Muslim Brotherhood were attacked.
Last year the US ambassador and three other American diplomats were killed in Benghazi.