JERUSALEM/BEIRUT (Reuters) - Lebanon's Hezbollah fired heavy rocket barrages at Israel on Sunday, with Israeli media reporting that a building had been hit near Tel Aviv, after a powerful Israeli airstrike killed at least 20 people in Beirut the day before.

A powerful Israeli air strike flattened a residential building in central Beirut early Saturday, killing at least 11 people and wounding 63 others, according to witnesses and the Health Ministry's initial count.

A powerful Israeli airstrike targeted central Beirut on Saturday, security sources said, shaking the Lebanese capital as Israel pressed its offensive against the Iran-backed Hezbollah group.At least four people were killed and 23 wounded in the attack in Beirut's Basta neighbourhood,