STORY: "This summer might be a hot summer," he said in a recorded statement, alluding to a possible expansion of hostilities along the northern border with Lebanon.

Israel carried out heavy airstrikes in south Lebanon and Hezbollah said it had launched explosive drones and powerful rockets at Israeli targets on Wednesday in an escalation of seven months of hostilities in the border region.

Israeli attacks killed three people in Lebanon, security sources said.

The conflict between Hezbollah and Israel has rumbled on since October in parallel to the Gaza war, uprooting tens of thousands of people on both sides of the frontier and fuelling concern of a bigger war between the heavily armed adversaries.