Computer hacker Gary McKinnon faces being tried in the US after requests to block his extradition were refused, the Home Office has confirmed.

Home Secretary Alan Johnson told Mr McKinnon's family he could not block the move on medical grounds.

Glasgow-born Mr McKinnon, 43, who has Asperger's syndrome, is accused of breaking into US military computers. He says he was seeking UFO evidence.

Now of Wood Green, north London, he faces 60 years in prison if convicted.

Mr Johnson said he had carefully considered the representations but had concluded that sending Mr McKinnon to the US would not breach his human rights.

As such, he had no discretion to block the extradition.

"Due to legitimate concerns over Mr McKinnon's health, we have sought and received assurances from the United States authorities that his needs will be met," he said.

Full story: BBC News