Home Secretary Theresa May has been granted permission to appeal against the decision to allow radical preacher Abu Qatada to stay in the UK, court officials said.
She has been given the go-ahead by the Court of Appeal.
A date for a hearing in London has not yet been set.
Last month the Special Immigration Appeals Commission (SIAC) ruled that Qatada should not be deported to Jordan where he was convicted of terror charges in his absence in 1999.
A panel of three judges found that there was a risk that evidence obtained using torture would be used against the controversial cleric in a re-trial.
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