Lebanese armed group Hezbollah confirmed its media relations chief Mohammad Afif was killed by an Israeli strike.

Schools in Beirut were closed on Monday after Israeli strikes on the Lebanese capital killed six people including Hezbollah's spokesman, the latest in a string of top militant targets slain in the war.

The attack occurred on the same day that Israel bombed sites in the Syrian capital that the Israeli military said were affiliated with a militant group. At least 15 people were killed, Syrian state media reported.