Story highlights New autopsy: Teen's death caused by "apparent non-accidental, blunt force trauma"

Kendrick Johnson, 17, was found headfirst in a rolled-up gym mat at high school

Georgia law enforcement said his death was accidental, caused by positional asphyxia

Kendrick's family demanded outside exam after law enforcement findings

Georgia teen Kendrick Johnson, who was found dead in a rolled-up gym mat at his high school in January, died as the result of "unexplained, apparent non-accidental, blunt force trauma," according to a newly released, independent autopsy report.

The report, obtained exclusively Tuesday by CNN, directly contradicts the finding of an autopsy conducted by the Georgia Bureau of Investigation that determined that Johnson's death was the result of positional asphyxia. The Lowndes County Sheriff's Office determined that his death was accidental.

Johnson, 17 and an athlete,was found January 11 headfirst in a rolled wrestling mat at a Lowndes County High School gym in Valdosta, Georgia.

Inconsistencies in official reports on the condition of Kendrick's body have led the family and community to question the official cause of his death.

The family's attorney, Chevene King, has sent the independent autopsy report to the U.S. Department of Justice Civil Rights Division, the Georgia Bureau of Investigation, the U.S . Attorney for Georgia's Middle District and Lowndes County Coroner for review.

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