US Middle East mediator Amos Hochstein arrived in Beirut early Tuesday in an effort to finalize a ceasefire agreement that would end the ongoing war between Israel and Hezbollah, a government source said and state media reported.

An Israeli airstrike killed five people in central Beirut on Monday, Lebanon's health ministry said, the second day in a row Israel has hit a target within the capital as it presses its campaign against Iran-backed armed group Hezbollah.

Amos Hochstein is expected in Beirut on Tuesday, according to two Lebanese official sources, in a sign of progress in ceasefire negotiations for the deadly cross-border conflict between Israel and Hezbollah in Lebanon.