Well, it seems he may be "unarrested" soon. From ABC,
Food Poisoning Blamed In Second Northwest Flight 253 Bomb Scare
"A second scare of a possible bomb on Northwest Airlines flight 253 Sunday was the result of a passenger who refused to come out of the bathroom because he was sick with food poisoning, law enforcement officials told ABCNews.com.
FBI agents and local police swarmed the plane as it landed in Detroit after the pilot reported an "belligerent and uncooperative" passenger who had spent more than an hour in the bathroom as the flight neared Detroit.
Authorities said the passenger was a 36-year old Nigerian petroleum engineer who became unhappy to be ordered to his seat one hour before landing, as required under new in-flight rules following the attempted Christmas day bombing of the same flight by another Nigerian citizen. "...........
.................."Officials gave an "all clear" message a short time later after interviewing the Nigerian passenger and determining he was, indeed, ill.
The Nigerian accused of attempting to blow up Northwest flight 253 on Christmas Day, Farouk Umar Abdulmutallab, told investigators he was part of a "larger plot" and that he believed there were other potential bombers set on similar missions on American aircraft, according to law enforcement officials."