Egypt�s incoming president made an outlandish but troubling pledge Friday to push for the release of a blind sheik imprisoned in the U.S. for a plot to blow up five New York landmarks.

Omar Abdel-Rahman, spiritual leader to the men convicted in the 1993 World Trade Center bombing, is rotting in a North Carolina federal prison hospital for the scheme of simultaneous follow-up bombings that could have killed thousands.

Mohammed Morsi, an Islamist politician whose election was made official Sunday, issued the promise while speaking in Cairo�s Tahrir Square, before a crowd composed mainly of fellow Islamists.

�I will do my best to free all detainees, including Dr. Omar Abdel-Rahman,� he said, pointing to people in the crowd who held up a poster of the convicted plotter.

Abdel-Rahman�s backers argue he should be repatriated to Egypt on humanitarian grounds � but U.S. elected officials said Morsi won�t succeed in such a quest.

Rep. Pete King (R-L.I.), chairman of the House Homeland Security Committee, said Abdel-Rahman isn�t going anywhere.

King voiced concern over what Morsi�s remarks say about his ideology and judgment � and about the new regime in Cairo.

�Beginning his presidency by saying that he�s going to free the Blind Sheikh is despicable,� King said.

�The U.S. has to face up to the reality that he can�t be trusted,� King added. �He�s an Islamist; he�s a radical.�

READ MORE: NY DAILY NEWS