McKinnon, who has been accused of hacking into computers owned by NASA and the US military, lost his appeal in the High Court to take his case to the UK Supreme Court of England and Wales on October 9.
The UFO hacker's lawyers had argued that the Supreme Court should hear his case because he suffers from Asperger's syndrome, which is a variation of autism. Medical experts have concluded that McKinnon's health could be at grave risk if he was extradited to the US.
The Home Secretary's lawyers have agreed to put a hold on McKinnon's extradition, pending psychiatric review to ascertain the medical evidence surrounding UFO hacker McKinnon's condition.
The House of Commons Select Committee on Home Affairs is also said to be planning a special session to examine the scope of the extradition treaty between the UK and the US.
Committee Chairman Keith Vaz has been quoted as saying that he wants to get the best deal for UK citizens. The committee is likely to call McKinnon's family as witnesses, and will examine why US lawyers only need to demonstrate 'reasonable suspicion' to obtain an extradition warrant.
If extradited and successfully convicted, UFO hacker McKinnon faces up to 60 years in a US jail.