The Israeli military said on Tuesday it had struck "key" figure from Palestinian group Hamas near the northern Lebanese city of Tripoli, in a rare attack in the area.
In a statement, Israel's military did not give the identity of the targeted person. There was no immediate comment from Hamas.
In an updated toll, Lebanon's health ministry said the strike on a vehicle "killed three people and wounded 13" in an area that is close to the Beddawi Palestinian refugee camp.
The ministry had earlier said two people were killed.
Hamas and other Palestinian militant groups maintain a presence in several refugee camps in Lebanon, which have for decades housed Palestinians expelled when the State of Israel was created in 1948.
Since the start of the Gaza war in October 2023, Israel has carried out targeted strikes on Lebanese militant group Hezbollah as well as members of Palestinian factions in Lebanon.
Hamas' deputy chief was killed in an Israeli airstrike on Beirut's southern suburbs in January 2024, and other strikes hit the Beddawi camp.
A U.S.-brokered ceasefire last year ended the conflict between Hezbollah and Israel, though Israel has continued to carry out strikes on what it says are Hezbollah arms depots and fighters, mostly in southern Lebanon.
Tuesday's strike near Tripoli was the first time a targeted assassination had taken place in the area since the truce.
Meanwhile, U.S. envoy Thomas Barrack continued a two-day visit to Lebanon to discuss disarming Hezbollah and other militant groups.