MARJAYOUN, Lebanon (AP) _ Israeli warplanes fired missiles at suspected guerrilla hideouts in south Lebanon today just hours after guerrillas killed an Israeli-allied militiaman, Lebanese security officials said.

The planes fired two rockets at targets about a mile southeast of Beaufort Castle, where the earlier attack occurred, said the officials, speaking on condition of anonymity.

There was no immediate word of casualties in the air raid.

Witnesses said plumes of smoke billowed from the bush on the edge of the Israeli-occupied zone.

The midmorning air raid came about five hours after Hezbollah guerrillas fired rifles and mortars at the Israeli-backed South Lebanon Army outpost, about four miles northwest of Marjayoun, the main town in the Israeli-occupied enclave. Lebanese security officials said one SLA militiaman was killed in the attack.

The Iranian-backed Hezbollah have been waging a guerrilla war to oust some 1,500 Israeli soldiers and 2,500 SLA militiamen from the zone that Israel set up in 1985 to protect its northern territory from attack.