We lost the legendary Prince this past Spring, and there are still tons of questions surrounding his death. As more info comes out, reports now state that the pills found at the singer’s house were even more dangerous than the average drug.

The pills were reportedly counterfeit drugs that contained fentanyl, which is a synthetic opioid 50 times more powerful than heroin. An anonymous official who spoke to the AP says many pills were falsely labeled as “Watson 385,” but according to Drug.com, that stamp is used to identify pills containing a mix of acetaminophen and hydrocodone.

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Via Billboard:

About a dozen tablets were found in a dressing room at Paisley Park, but the vast majority was in bottles of Vitamin C and aspirin that had been tucked inside a suitcase and bags — including one Prince often carried with him.

Autopsy results released in June show Prince died April 21 of an accidental fentanyl overdose. The official who spoke to the AP said records show the 57-year-old Prince had no prescription for any controlled substances in the state of Minnesota in the 12 months before he died.

Cops are still looking into how exactly Prince got his hands on the pills. So sad. RIP!