A St. Paul drug dealer and repeat felon has been charged with murder after one of his customers overdosed on a mixture that included heroin and fentanyl.

Garyegus L. Cooper, 38, was charged Wednesday in Hennepin County District Court with third-degree murder in connection with the death of a 33-year-old man in his Orono home. Cooper was charged by warrant and has yet to be arrested.

The medical examiner’s office on Thursday identified the victim as David Andrew Mack-Bohnhoff. An autopsy determined that Mack-Bohnhoff died from ingesting a mixture of fentanyl and alcohol, with recent heroin use as a contributing factor.

According to the complaint:

A family member discovered Mack-Bohnhoff on June 25 on the floor in his bedroom and called the Sheriff’s Office. Authorities declared him dead at the scene and noted a recent puncture wound on his right arm.

Near the body were a lighter, a spoon holding illicit drugs, and needles. Also near Mack-Bohnhoff was a plastic baggie with heroin inside. Testing on the baggie turned up DNA matching Cooper’s, which was on file in the law enforcement database.

Investigators also located Cooper’s number on Mack-Bohnhoff’s cellphone.

Cooper’s criminal history in Minnesota reaches back to when he was 16 years old and was convicted of possessing crack cocaine. He also has two convictions on his record for felony assault.