Alva Review-Courier -

MINNEAPOLIS (AP, Oct. 3, 2016) — More than five months after Prince's fatal drug overdose, investigators have narrowed their focus to two main questions: whether doctors illegally prescribed opioids meant for the pop star and whether the fentanyl that killed him came from a black-market source, a law enforcement official said.

Those lines of inquiry raise the prospect that a doctor or doctors could be charged with writing unlawful prescriptions and that a separate suspect or set of suspects with ties to narcotics trafficking could be charged with supplying the fatal dose.

Prince was 57 when he...