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An 11-year-old boy joined four teens in a late-night gun shop heist that netted 15 firearms - then boarded a city bus for the trip home, Philadelphia police said.
All were arrested after a passerby alerted authorities to the burglary in suburban Collingdale.
The boy's mother told police she thought her son - who was caught in action by a security camera - was home in bed.
Police found the cache of weapons abandoned near the bus stop.
