Court told mafia figure may have sent NCA bomb

Another man, not Domenic Perre (pictured in wheelchair), may be the NCA bomber, a court has heard. (PR HANDOUT IMAGE PHOTO) (AAP)

There was a "compelling hypothesis" that a now-dead mafia figure was responsible for the National Crime Authority bombing and not Domenic Perre, a court has been told.

Perre has launched an appeal over his jailing for the deadly 1994 Adelaide attack with defence counsel Andrew Tokley KC arguing his convictions were unreasonable and could not be supported on the evidence.