IS demand release of failed suicide bomber Sajida al-Rishawi

In yesterday's video purporting to show the execution of one of two Japanese hostages held by Isis militants, they said they would release remaining captive Kenji Goto in return for their "imprisoned sister" Sajida al-Rishawi.

Audio from the latest of the distressing propaganda films released by the militant fighters appears to be a plea from Goto, to his prime minister. Whilst holding a picture that appears to show the dead body of his friend and fellow captive Haruna Yukawa, he says:

In 2005, Sajida al-Rishawi confessed on Jordanian television to participating in a number of deadly attacks on Amman hotels.

She tried to blow herself up during at a wedding party with her husband at a hotel which killed 38 people.

Three male bombers and 57 civilians were killed at three hotels in the series of attacks across Jordan's capital.

Though she later recanted her confession, she was convicted in 2006, and remains in prison.

Jordanian authorities said the attacks were orchestrated by al Qaeda in Iraq, which was led by Jordanian-born Abu Musab al-Zarqawi. Jordan's deputy prime minister said after the attacks that al-Rishawi is the sister of Zarqawi's "right hand man".

In her confession, al-Rishawi said she and her husband stood at opposite sides of the room for the double-booming. She told Jordanian television:

Japan's deputy Foreign Minister Yasuhide Nakayama is in Jordan as part of his efforts to rescue the pair. This morning his convoy was seen leaving the Japanese Embassy and returning an hour late.