BENGHAZI?The Libyan rebel capital Benghazi was rocked by gunfire and explosions Saturday as fighters sent off volleys of celebratory fire after reports a NATO air strike killed strongman Moammar Gadhafi's son.

"They are so happy that Gadhafi lost his son in an air strike that they are shoooting in celebration," said Colonel Ahmed Omar Bani, military spokesman of the Libyan opposition Transitional Nation Council, headquartered in Benghazi.

Cars whizzed by the sea front beeping their horns and shouting "God is greatest" as the night sky was lit up by red tracer fire.

Sayf al-Arab Gadhafi, Gadhafi's youngest son, and three of his grandchildren were killed in an airstrike on Saturday, a Libyan government spokesman said.