Lauri Love, an alleged computer hacker from Suffolk, has said he may help British authorities with his own prosecution. He said he wants the case "over and done with".
US authorities have abandoned efforts to extradite him to the States. However, the 33-year-old said: "If I'm not convicted or acquitted here then the US can keep the case open indefinitely."
Love is alleged to have stolen huge amounts of data from US agencies in a spate of online attacks in 2012 and 2013.
Authorities in America fought for him to be extradited to face trial on charges of cyber-hacking, which lawyers said could have meant a sentence of up to 99 years in prison if found guilty.
The engineering student, who has Asperger syndrome as well as a depressive illness and severe eczema, won an appeal against extradition on the grounds it would be "oppressive" to his health.