The boy told police he had planned the robbery a couple of days earlier. He was "envious of other people who had material things he wanted." He admitted trying to separate the money after the robbery, cleaning himself up and going back to the scene to see how many police officers were in attendance.
In mitigation, his defence solicitor said that the facts if the case are "as startling as the are tragic." His family, she said, were "instrumental in bringing this young man to justice."
The boy told police upon questioning that he was sorry. His lawyer told the court he had an "impeccable character" and was "polite, courteous and obedient" and realised he has brought shame on his family.
More top news
Could be worse this Bank Holiday! Fine start on Sunday, hazy sun later. Cloudy start Monday, rain later. Winds easing
The north of England certainly sees the best of the Bank Holiday weather, lots of dry conditions, but still the risk of showers at times
A woman was told she had breast cancer, just months after a scan at a Lancashire hospital had given her the all clear.