JERUSALEM — Israeli warplanes fired missiles at dozens of targets across southern Lebanon overnight, including buildings that were reduced to rubble and a Hezbollah base where long-range rockets were stored, the military said.

Israeli defense forces said aircraft hit a total of 130 targets in Lebanon on Thursday and early today, including a Hezbollah base in the Bekaa Valley, where long-range rockets were stored, and 57 Hezbollah structures, six missile launching sites and six communication facilities.

Israeli jets fired missiles at a three-story building near the southern Lebanon market town of Nabatiyeh, destroying the building and killing a Jordanian man who was hit by shrapnel in a nearby home, Lebanese security officials.

The building housed a construction company believed to be owned by a Hezbollah activist, the officials said on condition of anonymity because they were not authorized to talk with the media. The strike also wounded four children nearby, they said.

Israel also destroyed two buildings in the village of Kfar Jouz near Nabatiyeh, and civil defense teams were struggling to rescue people believed buried in the rubble, witnesses said.

Warplanes pounded roads in southeastern Lebanon, a Lebanese army checkpoint in Ansar village and a castle in Arnoun village near the Lebanon-Israel border. In addition, Israeli jets fired more than 30 missiles at suspected Hezbollah hideouts in hills and mountainous areas in the southern part of the country, security officials said.

Meanwhile, the guerrillas continued to launch rockets into northern Israel today, with 10 fired at the towns of Ma'alot, Karmiel and Safed by midmorning, the army said. No casualties were reported.

At least 438 people have been reported killed in Lebanon since fighting broke out between Israeli forces and Hezbollah guerrillas, most of them Lebanese civilians. But Lebanon's health minister estimated Thursday that as many as 600 civilians have been killed so far in the offensive.

Thirty-three Israeli soldiers have died in the fighting and 19 civilians have been killed in Hezbollah's unyielding rocket attacks on Israel's northern towns, the army said.

The army said today that Israeli troops have killed about 200 Hezbollah guerrillas since fighting began more than two weeks ago. Hezbollah has reported far fewer casualties.

Israel launched its offensive in Lebanon on July 12, after Hezbollah guerrillas overran the border, killing eight soldiers and capturing two others. Israeli forces opened an earlier offensive in the Gaza Strip on June 28, three days after Hamas militants attacked Israeli army post in southern Israeli, killing two soldiers and capturing another one.

Hezbollah and Hamas have both demanded the release of Hezbollah and Palestinian prisoners in return for freedom for the three Israeli captives, but Israel's government has refused.

Israel decided on Thursday not to expand its ground battle with Hezbollah guerrillas in southern Lebanon for now, but the Cabinet authorized the army to call up 30,000 reserve soldiers in case the fighting intensified.

Fierce ground battles that raged Wednesday in the Lebanese border villages of Bint Jbail and Maroun al-Ras appeared to have abated, with U.N. observers reporting only "sporadic fighting" there Thursday.