"Yesterday, a UAV launched by the Hezbollah terrorist organisation hit an army base adjacent to Binyamina," the military said in a statement.

"Four IDF (army) soldiers were killed in the incident and an additional seven were severely injured."

Earlier Sunday, the Lebanese militant group Hezbollah, which is at war with Israel, said it had launched "a squadron of attack drones" at a military training camp in Binyamina, south of Haifa, in response to Israeli air strikes on the country.

The incident comes two days after air raid sirens sounded in central Israel after two aerial drones entered the country from Lebanon. At least one building north of Tel Aviv was damaged during the incident.

Hezbollah has been regularly firing rockets and drones into Israel for more than a year, but has reached further since the fighting escalated in late September.

Israel's air defences, including the Iron Dome system, have intercepted most of the projectiles, with few casualties caused by strikes or falling debris.