Law enforcement source gives details of Bieber 's flight from Canada . Pot smoke was so strong in jet 's cabin the flight crew put on oxygen masks , source says . Source also tells TMZ that Bieber's plane landed at a small airport near Toronto and then took off again for Mexico City. Bieber rep Matthew Hiltzik declines comment to CNN .
Law enforcement source gives details of Bieber 's flight from Canada . Pot smoke was so strong in jet 's cabin the flight crew put on oxygen masks , source says . Pilot claims Bieber and his father were verbally abusive to the flight crew , source says . Bieber rep Matthew Hiltzik declines comment to CNN .