David Carradine‘s family has called in the FBI to help investigate his death in a luxury hotel in Thailand. David’s half-brother, Keith Carradine, 59, met Friday with FBI officials in Los Angeles. Though the FBI has no juridiction in Bangkok, FBI spokeswoman Laura Eimilller told People magazine that they’re attempting “to determine if the Thai authorities are requesting or would welcome FBI assistance in this matter.” Keith’s main reason for getting them involved is “to determine if anyone else was involved,” says his attorney, Mark Geragos. The family is extremely upset that a photo of David’s death scene, allegedly taken by a member of the Thai forensics team, was published on the Saturday cover of a Thai newspaper. The photo shows Carradine’s hands tied above his head, which has led the family to question whether David’s death is a homicide, rather than an accident. However, Brent Turvey, a forensic scientist and criminal profiler who has studied auto-erotic asphyxiation told TMZ that this is a fairly common practice by those who enjoy auto-erotic suspension: “By tying his hands above his head, and bending his knees in a sitting position, he can easily stand up and untie his hands with his teeth. Choking in this position is an accident that usually results from the rope being left on the neck a few seconds too long.”