PHOTOS: Leader of Islamic Ummah and Oppressed Imam Khamenei attends Arbaeen mourning ceremony in Tehran

Arbaeen mourning ceremony which marks the 40th day after the martyrdom anniversary of Imam Hussein, the third Imam, was held on Thu. at Imam Khomeini Hussainia in Tehran in presence of Leader of Islamic Revolution Ayatollah Khamenei and groups of university students.