Washington State Cougars football player Bryce Beekman died from an accidental overdose of fentanyl and promethazine, officials say.

The 22-year-old defensive back was found dead in his apartment back on March 23 and people were baffled about the cause of death.

But now, the Whitman County Coroner's Office in Washington says an investigation shows "the cause of death was acute intoxication due to the combined effects of fentanyl and promethazine."