According to ABC affiliate WKBW out of Buffalo, NY, 20-year-old Jonah Snyder died after suffering “a medical emergency” last Thursday at the Black and Brave Wrestling Academy in Moline, IL. The academy is run by WWE star Seth Rollins and Marek Brave.

The coroner’s report notes Snyder was training with eight other people when he suddenly began to feel ill. Trainers asked him to stop working and to rest, but when Snyder’s condition failed to improve academy staff called 911. Paramedics arrived on the scene but by that time Snyder had gone into cardiac arrest, and was pronounced dead when he arrived at the hospital. The report furthers the autopsy was inconclusive.