The death of Gynnya McMillen, 16, in a Kentucky detention center earlier this year sparked anger among civil rights activists as details emerged about her passing. But officials say that the teen, who was discovered in her cell on Jan. 11, died of an irregular heartbeat and not from an altercation with the facility's staff, according to BuzzFeed.

Reginald Windham, a longtime employee of the Lincoln Village Juvenile Detention Center, amassed a record of misconduct, including charges of excessive force and negligence.

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Staff at the Lincoln Village Juvenile Detention Center used the Aikido restraint on Gynnya McMillen a day before she was found dead, claiming she refused to remove her sweatshirt in order to be searched and photographed for booking.

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Gynnya McMillen was discovered unconscious at the Lincoln Village Regional Juvenile Detention Center in Elizabethtown, Ky.