Israeli air attacks battered Beirut’s southern suburbs overnight and early, the most intense bombardment of the Lebanese capital since Israel sharply escalated its campaign against group Hezbollah last month, Reuters reports.

During the night, the blasts sent booms across Beirut and sparked flashes of red and white for nearly 30 minutes visible from several kilometres away.

It was the single biggest attack of Israel’s assault on Beirut so far, witnesses and military analysts on local TV channels said.

A grey haze hung over the city and rubble was strewn across streets in the southern suburbs, while smoke columns rose over the area.

“Last night was the most violence of all the previous nights. Buildings were shaking around us and at first I thought it was an earthquake. There were dozens of strikes - we couldn’t count them all - and the sounds were deafening,” said Hanan Abdullah, a resident of the Burj al-Barajneh area in Beirut’s southern suburbs.

Videos posted on social media, which Reuters could not immediately verify, showed fresh damage to the highway that runs from Beirut airport through its southern suburbs into downtown.

Israel said its air force had “conducted a series of targeted strikes on a number of weapons storage facilities and terrorist infrastructure sites belonging to the Hezbollah terrorist organization in the area of Beirut”.