Jordanian television has shown pictures of a woman who reportedly tried and failed to launch a suicide attack alongside her husband last week.
Officials in Amman had her show the explosives belt she was allegedly wearing.
It did not detonate, although her husband and two other suicide bombers did strike in three hotels across the capital. Some 57 people died in the attacks.
In the video, she says she and her husband took different corners of a room where a wedding party was underway before the blasts.
Amman says the woman is the sister of a former right hand man to Abu Musab al Zarqawi, the Jordanian who leads al-Qaeda in Iraq.
Wednesday’s bombings were the first terrorist attacks of their kind in Jordan.
Jordan’s King Abdullah says the carnage strengthens his resolve.
“The tragedies that unfolded in Jordan have happened in many parts of the world from Asia to Russia to all Muslim Arab countries to Europe and to the Americas and this is a phenomenon that brings us closer together because the only way we will be able to overcome these extremists, is if we are united and one,” he said.
Despite the targets being Western-owned hotels, most of the victims were Jordanian.
The country is a close ally of the US.
Demonstrations after the bombings showed support for King Abdullah.