` ` This is not accidental , '' Pittsburgh medical examiner says . It is used to treat pain in cancer patients . Mixing it with alcohol is ` ` extremely dangerous '' It 's not the first time that fentanyl has turned up on the streets of Pittsburgh . No , prosecutor says .
` ` This is not accidental , '' Pittsburgh medical examiner says . It is used to treat pain in cancer patients . Mixing it with alcohol is ` ` extremely dangerous '' No , prosecutor says .