Ian Cleary, 31, of Saratoga has been detained since April.
Investigators say he stalked the victim at a party, followed her back to her dorm, then sexually assaulted her.
RELATED: Bay Area native who allegedly admitted to 2013 rape via Facebook message caught in France
Bay Area native who admitted to rape via Facebook caught in France
They reopened the case in 2020 when the victim received several messages appearing to be from Cleary, including one that read, "So, I raped you."
It's not clear when Cleary will be brought back to the United States.
He has refused to be extradited, which will slow the process.