New pictures of Guantanamo detainee Omar Deghayes have been released by his family in a desperate bid to step up the campaign for his release.

Mr Deghayes was incarcerated in Camp Delta by the US authorities following his capture by bounty hunters in Pakistan five years ago. He has never been charged with a criminal offence and has been held without trial.

The Argus is campaigning for the Government to put pressure on the US to give Mr Deghayes a fair trial or release him to his family in Saltdean.

The images show Mr Deghayes with his father, Amer, whose assassination at the hands of Colonel Gadaffi's regime forced the family to flee to the UK in 1987.

Mr Deghayes' brother Abubaker said: "He was very close to his dad but he didn't like taking orders from him. He was the one who made us laugh by bossing him around and talking back to him. He was close to our mother Zlhara as well. He always read a lot of books and when he found something special he would run off and read it to her.

"She talks about him all the time now and when she talks about him, she cries. They were very very close."

Most of the pictures were taken during the family's stay in Switzerland when Omar, one of eight Britons held by the US, was just five years old.

Abubaker said: "It was a very different life there. He was a very happy, jolly chap then. He loved playing football but hating losing.

He'd want to win every game. I used to let him win because I knew that he wouldn't play again if he didn't."

When the family moved to Brighton in 1987 the brothers remained close, despite attending different schools. Abubaker said: "We were friends. We very much stuck together. We went to mosque together and talked about religion. We didn't agree on everything. He was always very argumentative and would always go to books and bring me back quotations that proved his side was right. It always took him some time to come around if I turned out to be right."

Abubaker last saw his brother in 2001 when he went travelling to Malaysia, Pakistan and Afghanistan.

Jackie Chase, of the Brighton campaign group Save Omar, described the pictures as "really moving".

She said: "He could be anyone's little boy."

The Save Omar Campaign will hold a candle-lit vigil at Churchill Square Shopping Centre tomorrow.

For more information, visit www.save-omar.org.uk