A multi-faith vigil for the kidnapped peace campaigner Norman Kember is to be held in Birmingham city centre.
Norman Kember has been shown blindfolded and shackled
The 74-year-old was abducted in Iraq on 26 November by a group calling themselves The Swords of Truth.
They demand the release of all Iraqi prisoners detained by British and American forces.
Saturday's vigil in Chamberlain Square is being organised by friend John Johanesenberg, from Worcester, Chair of the Fellowship of Reconciliation.
Mr Kember, from Pinner, north London, was seized in Baghdad on 26 November. He was taken captive along with Canadians James Loney, 41, and Harmeet Singh Sooden, 32, and an American Tom Fox, 54.
The Swords of Truth group demands all Iraqis detained by coalition forces be freed but two deadlines they set have not been met and there has been no word about the hostages.
Mr Johanesenberg said the passing of the deadlines has heightened tensions for Mr Kember's family.
He told BBC radio Hereford and Worcester: "I think it has been a very tense and difficult time for the family.
"They have done a couple of interviews on al-Jazeera TV and organised advertising in Baghdad so they can make an appeal for Norman's return."
The vigil for Mr Kember will begin at 1130 GMT and it is being billed as a multicultural event with people of all faiths joining together.
It will include representatives of Birmingham's mosques and synagogues.