“The bottom line is we simply do not have enough evidence to charge anyone with a crime regarding Prince’s death,” Carver County Attorney Mark Metz said in a press conference Thursday announcing that no one would face charges.

Metz explained that Prince had been taking counterfeit Vicodin pills that were laced with fentanyl, but said there was no evidence that the 57-year-old had any idea that the pills contained a drug that is 30 to 40 times stronger than heroin. A toxicology report after his death found an “exceedingly high” level of the opioid fentanyl in his body.

“In all likelihood, Prince had no idea he was taking a counterfeit pill that could kill him,” Metz said.