An Alabama physician is scheduled to go on trial Friday on charges that he improperly prescribed fentanyl and other drugs to 3 Doors Down guitarist Matthew Roberts, who died of a drug overdose.

Dr. Richard Snellgrove of Fairhope faces a 13-count federal indictment in Mobile alleging unlawful distribution of controlled substances and health care fraud.

An indictment alleges he prescribed the drugs that killed Roberts, who was found dead in August 2016 in a hotel hallway near Milwaukee. Roberts was to perform a charity concert there. The indictment states Snellgrove began prescribing drugs to Roberts as early as 2005.

Snellgrove faces up to 240 years in prison and up to $2.8 million in fines if convicted.

Roberts' family is also suing Snellgrove and others in a civil lawsuit.