The Israeli military said Hezbollah had fired dozens of rockets and several drones into northern Israel on Saturday killing one person, with one drone directed at Israeli Prime Minister Benjamin Netanyahu's holiday home, according to his spokesman.
Lebanon's health ministry said at least two people had been killed in an Israeli strike near the Christian-majority town of Jounieh, north of Beirut, in the first such attack on the area.
Separately, the Israeli military said its aircraft killed Hezbollah's deputy commander of the Bint Jbeil area on Friday and that its troops had seized weapons, including anti-tank missiles.
Hezbollah by midday on Saturday had claimed 11 attacks on Israeli military targets since midnight, all of them with salvos of rockets. There was no immediate comment from it on any drone attacks or attacks targeting Netanyahu's home.
In northern Israel, some of the rockets were intercepted but one hit a residential building, according to police.
One person was killed and at least nine people were injured in different locations, the Israeli ambulance service said. Air raid sirens sent people running to shelters.
Netanyahu's spokesman said the prime minister was not in the vicinity of his holiday home in Caesarea and there were no casualties.
A resident of the coastal town told Israel's N12 News that helicopters were heard above the town before a large explosion shook the streets.
By Maayan Lubell and Maya Gebeily