A security official says one bombing targeted an abandoned church in Benghazi that had been previously damaged by fire. The explosion damaged only a car parked outside.
The official says two other explosions targeted parked security vehicles elsewhere in the city. A soldier was lightly wounded from flying debris.
The official spoke on condition of anonymity because he was not authorized to brief the media.
Tripoli's security spokesman, Essam el-Naas, says two suspects have been arrested for an explosion near the Saudi, Greek and Palestinian embassies. A second went off near a security building.
He did not give further details about the suspects.
All explosions took place Saturday.