Matt Roberts, guitarist for the post-grunge band 3 Doors Down, died back in August 2016 from a prescription drug overdose. He was found to have fentanyl, hydrocodone and alprazolam in his body. Now, Dr. Richard Snellgrove, the physician who prescribed Roberts fentanyl, is facing a 13-count federal indictment in Mobile, Alabama, which alleges unlawful distribution of controlled substances and health care fraud.

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Roberts was found dead in a hotel in West Bend, Wisconsin, near a Milwaukee charity concert where he was set to perform. Now an indictment alleges that Snellgrove prescribed the drugs that killed Roberts, with court documents stating that he started prescribing him drugs as early as 2005 and that he knew he had prescription problems. He faces up to 240 years in prison and up to $2.8 million in fines. He has pleaded not guilty.

In addition to the federal indictment, Snellgrove (along with Rite Aid Corp. and others) is facing a civil lawsuit from Roberts’ family. That case is currently stayed pending the outcome of the criminal case.

3 Doors Down is best known for their 2000 hit “Kryptonite” (co-written by Roberts), which has become a staple of alternative rock radio. Roberts was a founding member of the band alongside vocalist/drummer Brad Arnold and bassist Todd Harrell when they formed in 1996 in Escatawpa, Mississippi. He remained with the band until 2012, when he left to focus on his health, though he did continue to play guitar.