A Briton accused of hacking into secret military computers has lost his appeal against extradition to the US.
Glasgow-born Gary McKinnon was said to be "distraught" after losing the appeal to the European Court of Human Rights. He faces extradition within two weeks.
The unemployed man could face life in jail if convicted of accessing 97 US military and Nasa computers.
The 42-year-old admitted breaking into the computers from his London home but said he sought information on UFOs.
Mr McKinnon asked the European Court of Human Rights in Strasbourg to delay his extradition pending a full appeal to the court against his extradition but his application was refused.
He claimed the extradition would breach his human rights.
His solicitor Karen Todner said this had been her client's "last chance" and appealed to Home Secretary Jacqui Smith to intervene.
Our client now faces the prospect of prosecution and imprisonment thousands of miles away from his family in a country in which he has never set foot
Solicitor Karen Todner
"He is absolutely devastated by the decision," she said. "He and his family are distraught.
"They are completely beside themselves. He is terrified by the prospect of going to America."
She added Mr McKinnon had recently been diagnosed with Asperger syndrome and would ask for the case to be tried in this country.
"The offences for which our client's extradition is sought were committed on British soil and we maintain that any prosecution ought to be carried out by the appropriate British authorities," she added.
"Our client now faces the prospect of prosecution and imprisonment thousands of miles away from his family in a country in which he has never set foot."
Mr McKinnon, from Wood Green, north London, was arrested in 2002 but never charged in the UK.
He first lost his case at the High Court in 2006 before taking it to the highest court in the UK, the House of Lords.
The US government claims he committed a malicious crime - the biggest military computer hack ever.
The authorities have warned that without his co-operation and a guilty plea the case could be treated as terrorism and he could face a long jail sentence.
The former systems analyst is accused of hacking into the computers with the intention of intimidating the US government.
It alleges that between February 2001 and March 2002, he hacked into dozens of US Army, Navy, Air Force, and Department of Defense computers, as well as 16 Nasa computers.
Prosecutors say he altered and deleted files at a naval air station not long after the 11 September attacks in 2001, rendering critical systems inoperable.
However, Mr McKinnon has said his motives were harmless and innocent. He denies any attempts at sabotage.
He said he wanted to find evidence of UFOs he thought was being held by the US authorities, and to expose what he believed was a cover-up.
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