MINNEAPOLIS (AP) —A Minnesota prosecutor says Prince thought he was taking Vicodin when he accidentally overdosed on fentanyl.

Carver County Attorney Mark Metz detailed a two-year investigation that he said found no evidence to warrant criminal charges being filed in the pop superstar’s death.

Prince died April 21, 2016, at his Paisley Park compound.

Metz says evidence showed that Prince took counterfeit Vicodin without knowing it. And Metz says there’s no evidence any of the people surrounding Prince gave him counterfeit Vicodin or knew he had it.

A doctor who was accused of illegally prescribing a pain medication to Prince shortly before he died agreed Thursday to pay a fine as part of a civil settlement. But that pain medication wasn’t what killed Prince.

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