A Cyprus court has refused to hear testimony from a Cambridge University professor in defense of an Egyptian hijacker fighting an extradition request by his country over fears that he could be tortured or killed.

Judge Dona Constantinou ruled Thursday that Emile George Howard Joffe's testimony was inadmissible because his expertise was not specific to Egypt's current domestic situation.

State attorney Eleni Loizidou argues that a report Joffe prepared in which he concludes that extraditing admitted hijacker Seif Eddin Mustafa would put him at risk of torture or death was biased.

Joffe said he has submitted dozens of reports on asylum cases involving Egyptians for British courts.

Mustafa claims he hijacked a domestic EgyptAir flight in March and diverted it to Cyprus to underscore the wrongs done by Egypt's military-backed government.