Mark Anderson was found dead in his room at a Buckeye motel on June 6 after reported missing a month earlier by his family in Oklahoma City.
The Arizona Republic (http://bit.ly/QQqwHx) reports that an autopsy was conducted by the Maricopa County medical examiner.
The autopsy concludes that the 60-year-old Anderson died from a hemorrhage caused by tangled blood vessels on the brain.
Anderson closed the Tempe Improv on June 1, and police say a motel housekeeper found his body five days later.
Copyright 2012 The Associated Press