Lebanon's health ministry said early Wednesday that Israeli strikes in the country's east killed one person and wounded 20 others, hours after it said four people were killed in the south.

The statement said one person was in critical condition while "eight children and a pregnant woman were moderately wounded".

The strikes, that hit several targets east Lebanon near the city of Baalbek, including the village of Nabi Sheet, came more than 24 hours after Israel carried out similar raids deep inside east Lebanon and as tensions mounted in the wake of the Israeli killing of a top Hezbollah commander.

The strikes around midnight came after similar raids in the Bekaa region on Monday evening that Israel said targeted "Hezbollah weapons storage facilities".

They also came as Hezbollah said four of its fighters had been killed, after the health ministry said Tuesday that four people died in Israeli strikes in the southern border village of Dhayra.

The Israeli army announced that its fighter jets had conducted overnight airstrikes on Hezbollah weapon storage facilities in Lebanon's Bekaa Valley for the second consecutive night.

According to a military statement, Israeli forces also targeted Hezbollah air defenses in the area, which were described as posing a threat to Israeli aircraft.

The Israeli army accused Hezbollah of placing military assets within civilian-populated areas, calling it a "cynical exploitation of Lebanese citizens."

On Tuesday, Hezbollah claimed a string of attacks on Israeli troops and positions, including sending barrages of Katyusha rockets at several north Israel military positions in stated retaliation for Israeli strikes, including in Dhayra.

The group also said it launched "squadrons of explosive-laden drones" and "intense rocket barrages" at several Israeli positions in the annexed Golan Heights in response to Monday night's strikes in the Bekaa valley.

The Israeli military in separate statements said a total of around 115 "projectiles" were identified crossing from Lebanon.

It also said that "numerous suspicious aerial targets were identified crossing from Lebanon", with air defences intercepting some of them.

No injuries were reported, though the military said the incidents sparked fires in some areas.

The military also said air forces struck projectile launchers and several "Hezbollah military" structures in south Lebanon.

Lebanon's health ministry said three emergency personnel from the Hezbollah-affiliated Islamic Health Committee were hurt Tuesday when the Israeli military "targeted them" in south Lebanon, causing "significant damage to the ambulance they were travelling in".

The ministry "condemned in the strongest terms the repeated targeting of health workers in south Lebanon".