Georgia teen pleads guilty due to mental illness in fatal sword attack

Gavin Prince (MyFoxAtlanta.com)

A Georgia teenager pleaded guilty to stabbing his great-grandmother to death with a sword, but by reason of mental illness, MyFoxAtlanta.com reports.

Gavin Prince, 16, is facing murder and aggravated assault charges from the August 2011 attack.

Prince began to attack family members after his grandmother told he him could not play a video game, the Douglas County district attorney alleges. Prince reportedly started to attack the grandmother, Laura Prince, with a knife, but she was able to barricade herself in a bathroom.

Prince then took a sword and stabbed his great-grandmother, 77-year-old Mary Gibbs, and killed her, MyFoxAtlanta.com reports.

"I love my grandson," Laura Prince said. "I always told him I will always love him, no matter what."