Orange County, FL -- The autopsy of the body found has been confirmed as the missing Orlando teen, Alexandria Chery.
Orange County deputies say Chery's mother's boyfriend is the prime suspect in her disappearance.
The 16-year-old disappeared Monday from her family's Ocoee apartment where blood was discovered.
Investigators have arrested Sanil Saintsimon for lying to investigators and destroying evidence.
RELATED STORY: UPDATE: Body found in search for missing teen
Chery's bedroom was stripped bare. Her bedding and most of her belongings were gone.
Investigators say Alexandria's mother came home from work Monday night and found blood in her daughter's room, and men's underwear soaked in bleach under the bed.
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