He was married to Sajida Mubarak Atrous al-Rishawi, who failed to detonate her explosives belt in the same attack as her husband and was arrested by Jordanian police.
The two lingered outside the Philadelphia Ballroom, where Mr Ashraf Akhras and his bride, Nadia, were celebrating their wedding with some 300 Jordanian and Palestinian guests.
Ali Hussein replied that they were Iraqis and had never seen a Jordanian wedding party and asked if they could have a look, the security official said, citing witnesses and video camera footage obtained from blast site.
The couple met up near the doorway to the ballroom, and guests told the police they saw the husband angrily gesture towards the woman, telling her to leave.
As she moved towards the door, the lights went out and her husband jumped up onto a nearby dining table and detonated his belt, sending the ceiling crashing down and spraying ball-bearings across the room.