Mac Miller's Father Breaks Silence on Arrest of Rapper's Alleged Drug Dealer.br Cameron James Pettit was br recently arrested for allegedly br supplying the late rapper with the br drugs that led to his death last year.br While attending a commemorative event br for his son in Pittsburgh, Pennsylvania, on Sept. 7, br Miller's father, Mark McCormick, spoke out.br So they finally caught the motherf----- that sold him the drugs that killed him. And we find some comfort in that, Mark McCormick, via Twitter video.br McCormick also urged the crowd br to stay away from drugs.br Many of us who were young, including me, experimented with drugs but it’s a different f------ world out there. And all it takes is a little stone, a little tiny stone of fentanyl and cocaine br and you’re dead, Mark McCormick, via Twitter video.br Don’t take the risk, br it’s just not worth it, Mark McCormick, via Twitter video.br Authorities allege that Pettit sold Miller br counterfeit oxycodone that contained fentanyl, br which is about "50 times more potent than heroin." .