The United Nation's Special Tribunal for Lebanon may include Imad Mugniyeh among its list of suspects for the 2005 assassination of former Lebanese Prime Minister Rafik Hariri, the Wall Street Journal reported on Monday.

Hariri and 22 others died in February 2005 when a massive bomb exploded as his motorcade passed by the St. George Hotel in Beirut.

According to the report, Mugniyeh, a top Hezbollah commander who died in a 2008 car bombing, and his brother-in-law Mustafa Badreddine, may be among six top Hezbollah operatives the tribunal will indict.

Mugniyeh was on the U.S. most wanted list for masterminding mega terror attacks, among them the 1983 bombing of the U.S. Marine barracks in Beirut, which killed 243 Marines.

Hezbollah blamed Israel for his assassination, threatening to avenge his death against Jews in Israel and around the world.

Hezbollah spiritual leader and general-secretary Sheikh Hassan Nasrallah has renounced the U.N. tribunal and warned of violent protests should Hezbollah members be indicted.