Canadian law allows inmates convicted of first-degree murder to apply for parole after serving a minimum of 25 years . Olson 's second parole hearing , on July 18 , 2006 , was also denied . Olson made many bizarre and false claims , including that the United States had granted him clemency for providing information about the September 11 attacks and that the hearing had no jurisdiction over him because of that . Under Canadian law , Olson was then entitled to make a case for parole every two years
September 11 attacks
September 11 attacks
Clifford Olson