A Georgia teenager is behind bars after police said he shot his girlfriend in the head during a sleepover at her home.

Sebastian Prestridge, 19, was charged with involuntary manslaughter in the shooting that occurred after midnight on Thursday. Prestridge's girlfriend, Nina Ramirez, also 19, was shot in the head by Prestridge at her family home in Lawrenceville, Georgia, police said .

In an interview with local ABC affiliate WSB, Ramirez's mother said the two were "playing" with a gun they did not realize was loaded .

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According to police, officers from the Lawrenceville Police Department responded to a report that a teenage girl had been "shot in t

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