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.

Mohammed Afif, the head of media relations for Hezbollah, was killed in a strike on the Arab socialist Baath party's office in central Beirut, officials said.

Hezbollah's media chief Mohammed Afif has been killed in an Israeli strike in central Beirut, according to news reports citing Lebanese security sources. A strike hit the headquarters of the Baath political party in the densely populated Ras al-Naba neighbourhood on Sunday, according to Lebanon's state-run National News Agency.