Seven months after the remains of Suzanne Morphew were discovered in a shallow grave in a remote area of Saguache County, her autopsy has been completed.

The manner of death is listed as "homicide by undetermined means in the setting of butorphanol, azaperone, and medetomidine intoxication," according to the Colorado Bureau of Investigation.

The autopsy report said sedatives and tranquilizers were found in Suzanne's bones. Lawyers for Barry Morphew told 9NEWS that caffeine was also found in her body. Her biking clothes were found with her remains, according to Barry's attorney and the autopsy report.

A bullet was also found, but it wasn't clear whether it was used, according to the attorneys of Barry Morphew. His attorneys also tell 9NEWS that none of Suzanne's bones in her feet were found in the shallow grave, nor were her shoes. They do not know why that might be.

Morphew, 49, was last seen on Mother's Day 2020. She lived in Maysville in Chaffee County, west of Salida, with her husband Barry and their two daughters, Mallory and Macy. When she vanished, the Chaffee County Sheriff’s Office said she went for a bike ride but never returned home.

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