An Israeli air strike on Beirut's southern suburbs has killed at least three people, Lebanon's health ministry says, putting further pressure on a fragile ceasefire between Israel and the Lebanese armed group Hezbollah.

Israel has launched a strike on Beirut for the second time in days, further testing the shaky ceasefire with Hezbollah struck four months ago.

The attack on the outskirts of Lebanon’s capital was the second in less than a week, raising fears that a cease-fire between Israel and Hezbollah could unravel.

The United Nations agency for children says that at least 322 children are reported to have been killed since Israel launched a renewed offensive in Gaza two weeks ago. Unicef said at least 609 other children were reportedly wounded during the same period.

Over the past week, the Israeli military has pushed back into Rafah, launching air and artillery strikes, sending troops into several neighborhoods, and forcing Palestinians who had recently returned under a cease-fire to flee once again.