Dozens of people have been killed by Israeli strikes in Lebanon, including 20 who died after a strike flattened a multi-story residential building in central Beirut overnight, according to Lebanese officials.

Israeli strikes have killed over 40 Lebanese troops since the start of the war between Israel and Hezbollah​, even as Lebanon's military has largely kept to the sidelines.

At least one soldier was killed and 18 others injured, some seriously, after an Israeli attack targeted an army centre in the town of Al-Amiriya on the Al-Qalila-Tyre road in southern Lebanon, the Lebanese army said on Sunday.