Israeli warplanes attacked suspected guerrilla positions north of the western sector of Israel's occupation zone in south Lebanon on Friday, a security source said.

The source said that two planes had fired four rockets at the outskirts of Majdel Zoun village. There were no immediate reports of casualties.

He said the raid had been accompanied by an exchange of fire between guerrillas and Israeli positions in the area, which was also subjected to heavy shelling from inside the occupation zone.

The attack was the first since a speech by Israeli Foreign Minister David Levy on Wednesday in which he told parliament the soil of Lebanon would burn if Hizbollah guerrillas fired rockets at Kiryat Shmona and other northern Israeli settlements.

Iranian-backed Hizbollah (Party of God) guerrillas are waging a war of attrition to oust Israeli troops from the occupation zone that Israel set up in 1985, saying it needed to prevent cross-border attacks.