Security sources said Monday an Israeli drone fired a rocket into a pick-up truck suspected of carrying Hizbullah weapons that were smuggled in from Syria.
The attack took place on the main Lebanese crossing point into Syria while jets bombarded targets in south Lebanon hills.
The Lebanese sources said the truck was carrying aid from Syria when it was hit at the Masnaa border point. Four Lebanese customs men and the driver were wounded in the attack. Israeli warplanes had attacked the crossing on Saturday and on Sunday.
In south Lebanon the targets appeared to be Hizbullah positions in a hill in Bint Jbeil province, the sources said.
Israel had said it would observe a 48-hour suspension of air strikes on south Lebanon from shortly after midnight on Monday after an air strike on the village of Qana killed at least 54 civilians.
But the army said it reserved the right to strike at rocket launchers if Hizbullah fired at Israel.
Earleir on Monday the Air Force struck a car in a village north of Tyre, which was suspected to be carrying a senior Hibzullah member.
Following the strike, it turned out that officers and soldiers from the Lebanese army were riding in the car and they were hurt. The Israel Defense Forces expressed its regret over the incident.
Official sources in Lebanon reported that a Lebanese soldier was killed and another three were injured in the IDF strike.
The IDF decided to strike a target in the Tyre area after receiving intelligence that a Hizbullah member was traveling in the vehicle.
Reuters contributed to the report