Aaron Carter's death ruled an accidental drowning

The late singer Aaron Carter died last year in an accidental drowning at his Southern California home, according to autopsy results obtained Tuesday by CBS News.

The Los Angeles County Coroner's office determined that the 34-year-old drowned in his bathtub after inhaling difluoroethane, a flammable gas, and taking alprazolam, an anti-anxiety medication often sold under the brand name Xanax.

The autopsy noted that difluoroethane is "commonly used as a propellant in air spray cleaners for electronic devices and can induce feelings of euphoria when inhaled" — and can lead to cardiac arrest — while alprazolam can cause "drowsiness and sedation."