BENGHAZI, Libya, Feb 22 (Reuters) - Gunmen fired a rocket-propelled grenade at a Police car parked in front of the Tunisian consulate in Libya's eastern Benghazi city on Saturday, security officials said. Security officials said it was **t clear whether the unk**wn gunmen had targeted the car, which had four ******rs inside, or the consulate. Tunisia is one of the last states still with a mission in Benghazi. Egypt withdrew its personnel last month from its Benghazi consulate and Tripoli embassy for security reasons.