A 15-YEAR-OLD armed robber who bashed a woman unconscious at the Wiangaree General Store, near Kyogle, has failed to get his sentence overturned.
The teen, who can not be named due to his age, was sent to juvenile detention for at least two years and three months following a violent attack on two shopkeepers on February 24 last year.
He and four other juveniles arrived at the store in a stolen car about 2.50pm and decided "to do a robbery", the District Court at Lismore heard in November, 2013.
The male shopkeeper was repeatedly punched in the face, kicked on the ground and beaten with a broomstick.
His wife ran to his aid but was punched in the face "so hard she saw white".
While she was unconscious on the ground, the teen in question bent down and punched her in the face at least three more times.
By that stage, another of the robbers had pulled a knife on her husband and threatened to stab him if money and cigarettes were not handed over.
The five teens left with about 100 packets of cigarettes worth more than $2000, 42 bottles of alcohol worth more than $1400 and more than $1300 in cash and coins.
Police tracked down their stolen car at Bonalbo shortly afterwards and a chase ensued, before the teens crashed into a tree and tried to fled into the bush.
All of their fingerprints were discovered - either in the car, in the shop, or both - and most of the robbery was caught on security camera.
The boy who repeatedly punched the woman in the face argued his sentence was too severe and did not take into account his intellectual disability and ADHD.
Justice Peter Hamill dismissed the appeal in its entirety.
The boy will be eligible for parole in May.