The man accused of selling the drugs to rapper Mac Miller that eventually killed him has agreed to plead guilty to the distribution of fentanyl, the Department of Justice (DOJ) announced Wednesday.

Ryan Reavis, who is one of several people charged in Miller’s death in 2018, “knowingly distributed counterfeit oxycodone pills” to Cameron James Pettit on Sept. 4, 2018, the plea agreement says, according to CBS News. The rapper died days later.

The plea agreement states that although Miller also had cocaine and alcohol in his system, he would not have died if it weren’t for the pills containing fentanyl, CBS noted. 

Reavis’s co-defendant, who had directed him to give the fentanyl to Pettit, Stephen Andrew Walter, pleaded guilty to knowingly distributing fentanyl last month, according to CBS. 

Reavis faces up to 20 years in prison and a $1 million fine for the charges. He and Walter are expected to plead guilty in a Los Angeles court in the upcoming weeks, CBS reported. 

Drug overdose deaths in the U.S. rose last year to a new record of 93,000, with opioids, including fentanyl, making up much of the crisis at 69,000.