Hezbollah early on Tuesday morning said it launched volleys of rockets at two key bases near Tel Aviv and a naval base west of Haifa.
After a heavy night of Israeli strikes on Lebanon's south and the southern suburbs of its capital, Hezbollah said it had fired rockets at the Glilot base used by Unit 8200 of Israel's military intelligence, and the Nirit area in Tel Aviv's suburbs.
The group said it also fired rockets at a naval base outside of the port city of Haifa further north.
There were no immediate reports of casualties. Israeli authorities said air sirens were activated in areas southeast of Tel Aviv due to one projectile identified crossing from Lebanon and falling in an open area. Other sirens sounded in Tel Aviv.
Israel's multi-layered air defences have intercepted the vast majority of missiles and drones fired at it since the start of the Gaza war.
Hezbollah began launching projectiles into Israel in support of Hamas after Israel began its aggression in Gaza last year.
The conflict between Hezbollah and Israel intensified in October, with Israel launching a ground incursion into Lebanon and accelerating air raids. Israel has killed many high-ranking Hezbollah officials since, prompting Hezbollah to increase its strikes into Israel.
On Sunday, a Hezbollah drone targeted Israeli Prime Minister Netanyahu's home in Caesarea, although the leader was not at the site.
Iran could be producing enriched uranium in a few months, the head of the UN nuclear watchdog Rafael Grossi was quoted as saying on Sunday, raising doubts about how effective US strikes to destroy Tehran's nuclear programme have been.
The Jerusalem District Court has cancelled this week's hearings in Prime Minister Benjamin Netanyahu's long-running corruption trial, accepting a request the Israeli leader made citing classified diplomatic and security grounds.
The Israeli military ordered Palestinians to evacuate areas in northern Gaza on Sunday before intensified fighting against Hamas, as US President Donald Trump called for an end to the war amid renewed efforts to broker a ceasefire.
Russia used hundreds of drones, cruise and ballistic missiles to attack western, southern and central Ukraine overnight, damaging homes and infrastructure and injuring at least six people, local authorities said on Sunday.
At least seven Palestinians were killed and several others injured early Sunday in a series of Israeli airstrikes targeting Gaza City and Khan Younis in the southern Gaza Strip, Palestinian News & Information Agency (WAFA) reported.