The Los Angeles County medical examiner's office announced Friday that Memphis Grizzlies forward Brandon Clarke died from the effects of heroin and cocaine, ruling his death an accident. The office also listed the combined effects of multiple prescription medications as a contributing factor, though it did not specify which medications were involved.

"The Medical Examiner report will be available at a future date," the office said in a statement.

Clarke, 29, was found unresponsive at a home in Los Angeles' San Fernando Valley on the evening of May 11. According to the medical examiner's office, paramedics located him in a bedroom and pronounced him dead at the scene. Narcotics were found at the location, and sources told ABC News at the time that there was no evidence of foul play.

Clarke's death sent shockwaves through the NBA, particularly in Memphis, where he spent his entire seven-season career after being selected in the first round out of Gonzaga. He averaged 10.2 points and 5.5 rebounds across 309 career games with the Grizzlies.

"Brandon was an outstanding teammate and an even better person whose impact on the organization and the greater Memphis community will not be forgotten," the team said in a statement following his death.

Clarke finished fourth in Rookie of the Year voting during the 2019-20 season and developed into a valuable role player alongside Ja Morant and Jaren Jackson Jr. His career was increasingly disrupted by injuries in recent years, including a torn Achilles that sidelined him for more than a year across 2023 and 2024, along with knee and calf issues that limited him to just two games last season.

In April, while still recovering from injury, Clarke was charged in Arkansas with possession and trafficking of a controlled substance after being pulled over for speeding. Officers reportedly found a duffel bag containing roughly 1,200 pills, which Clarke described as kratom, a substance legal in several states but not in Arkansas. He was arrested and charged following the stop.

The medical examiner's office did not specify whether kratom was detected in Clarke's system at the time of his death. According to the FDA, kratom is commonly used to self-treat conditions including pain, anxiety, depression and opioid withdrawal.