Israeli warplanes have bombed southern Lebanon, a day after Lebanese guerrillas attacked Israeli soldiers in a border area.
Israel has hit different kinds of targets to previous raids
The planes fired rockets at a suspected outpost of the Hezbollah group.
Four Hezbollah fighters were killed in clashes on Monday, which came amid intense artillery fire from both sides.
Defence Minister Shaul Mofaz says Israel was conducting its most extensive response to Hezbollah attacks since its forces left Lebanon in 2000.
Mr Mofaz said raids on Monday and Tuesday had hit targets that "had not been attacked since the Israeli withdrawal", including command, intelligence and communication posts.
A bridge near the southern Lebanese village of Ein-Arab was also destroyed in the raids.
Hezbollah denied reports of a second air raid on Tuesday, saying a blast near the village of Abayseh was caused by a previously unexploded artillery shell.
Eleven Israelis were wounded in Monday's clashes - the worst violence in the area since the Israeli pullout.
Hezbollah conducts sporadic operations against Israeli troops in the Shebaa Farms area, which it and the Lebanese government say should have been included in the Israeli withdrawal in 2000.
Israel - backed by the United Nations - maintains the water-rich zone was captured from Syria in 1967 and its fate should be determined on via the stalled Syrian track of peace talks.
The clashes have overshadowed celebrations of Independence Day in Lebanon - the first in three decades without the presence of Syrian troops in its territory.