Boy, 16, to stand trial for killing his great-grandmother with a sword 'after told to stop playing video games'

Gevin Allen Prince, 15 at the time of the brutal attack, has been charged as an adult in his great-grandmother's slaying

It took 30 minutes for a jury to find the teen competent to stand trial on Wednesday



His 50-year-old grandmother also cut in attack

Suspect shot at police with pellet gun before arrest

A jury has ruled that a 16-year-old boy charged with killing his great-grandmother with a 35-inch Samurai sword is competent to stand trial in Georgia.



It took the Douglas County jury 30 minutes to come to their final decision over Gevin Prince on Wednesday who has been charged as an adult in the 2011 stabbing death outside his Douglasville home.



On August 15 the teen's great-grandmother 77-year-old Mary Joan Gibbs was found dead outside her home after what police said was a fight over her telling him to stop playing video games.

Facing attack: Gevin Prince, 16, left, will stand trial for killing his great-grandmother Mary Joan Gibbs, 77, pictured right, with a sword in August of 2011

His grandmother Laura Prince, 55, was also injured in the attack but has since recovered from her injuries, the Atlanta Journal-Constitution reports.



Mrs Prince told police that her grandson suffers from Asperger's syndrome, a form of autism, that contributed to what would become his uncontrollable behaviour over the years.

When police arrived to the home on Spring Ridge Drive, Prince was outside holding both the sword and a BB gun before firing at officers and hitting patrol cars.



After allegedly chasing two neighbours with the sword he was additionally slapped with two assault charges.

Reality check: Seen during his arraignment after the brutal attack, the now 16-year-old was charged as an adult in his great-grandmother's death

Child's play: Police said that the boy attacked his great-grandmother with the full-sized sword after she told him to stop playing video games on his computer

District Attorney David McDade said those neighbours, both juveniles, were not physically injured.



Mr McDade said: 'They saw what happened. The psychological impact is immeasurable.'



After a 10 minute standoff involving a K9 he was Tasered and taken into custody.



Prince remains jailed with a trial date yet to be set.

Making his first court appearance that August on charges of malice murder and four counts of aggravated assault, Prince answered politely when asked by the judge if he understood the charges against him.

Police said the fatal August attack was the third time in the last three months the teen had been arrested in 2011. They had already confiscated another sword off him.

Charges: It took a Douglas County jury 30 minutes to find the boy competent to stand trial, his judge pictured during his arraignment on charges of malice murder and four counts of aggravated assault

The local sheriffs department responded to a call at 5pm on that Monday to find the grandmother barricaded inside a room and the great-grandmother lying dead on the ground outside the home.

Douglas County Sheriff Phil Miller said of Prince: 'He came out with a pellet gun and shot two windows out of a patrol car that was sitting there. He was shooting at us with the pellet gun and swinging the sword around in the air.'



Deputies showed a lot of restraint and did not shoot the teen, CBS Atlanta reported. Instead, they distracted him with an explosive device.



'It got his attention,' said Sheriff Miller. 'We sent a K-9 unit in and he hit the K-9 dog with the butt of the pellet gun. At that point, we tased him then took him into custody.'

Attack: Officers are seen at the murder scene that also injured the boy's 55-year-old grandmother who barricaded herself in a bedroom

'We've arrested him on two different occasions,' said Sheriff Miller. 'Once in June where he had another sword, which is in evidence. This is not the same sword. He cut his grandmother on the foot with it that time.'



Police arrested him again on July 29.



'We almost had to hog tie him to not hurt him,' said Sheriff Miller, adding that each time deputies arrested the teen, they took him to the hospital for evaluations and doctors released him.



'Obviously he was a danger to himself, a danger to his family and a danger to this community,' said Sheriff Miller.

Pam Mayercik lives across the street from the family. She told CBS Atlanta she often saw the teen in the neighbourhood.

