Phoenix ? A woman who died in police custody during an airport layover was intoxicated on a potent mix of alcohol and antidepressants and accidentally strangled herself on her shackles, an autopsy released Friday concludes.

The Maricopa County Medical Examiner’s Office said Carol Anne Gotbaum, 45, of New York, was acutely intoxicated on alcohol and prescription drugs when she died in a police holding room at Phoenix Sky Harbor International Airport on Sept. 28.

Gotbaum’s blood-alcohol level of 0.24 percent was three times Arizona’s legal limit of 0.08 for driving. The official cause of death was hanging, the report concluded, adding she had a history of “use of antidepressant medications with intoxication.”