A medical examiner has concluded that David Carradine died of asphyxiation last month, the Hollywood Reporter says.

Michael Baden, a forensic pathologist hired by Carradine’s family to conduct a follow-up investigation, told Reuters, “The cause of death was asphyxiation, an inability to breathe, now why that happened is still what we’re working on.”

However, suicide has been ruled out as a cause due to the way Carradine’s body was found.

Carradine’s body was found in his Bangkok hotel room on June 4. According to the Reporter, some media outlets have suggested that he could have due to accidental autoerotic asphyxiation.

"He didn’t die of natural causes, and he didn’t die of suicidal causes from the nature of the ligatures around the body, so that leaves some kind of accidental death," Baden also said.

–Sergio Ibarra