Police have appealed to truckers across Britain to help find a lorry driver involved in a fatal road crash.
Police launched a nationwide search for the trucker following a collision on the A303 near Thruxton, on the Hants/Wilts border, on Tuesday.
Police say the lorry struck a Peugeot car which then spun across the road and hit another lorry parked in a lay-by.
Harry Simcox, 10, from Milton Keynes, died from his injuries. His 39-year-old father was seriously injured.
Driver behaviour
Police investigating the crash are trying to trace a lorry with the sign - AA LL EN - on the back.
The lorry failed to stop at the scene of the collision and detectives do not know its destination.
Sergeant Andy Timms said: "We have alerted the ports and other intelligence sources, and we have been researching haulage firms, CCTV, and are pursuing lines of inquiry along the route we believe the lorry may have come from.
The Peugeot spun across the road and hit a parked lorry
"We have also spoken to the haulage industry publications and released information through their sources and across the CB network.
"We are appealing to haulage firms, transport managers, and anyone in connection with the industry.
"We want them to be alert for a lorry with a white cab and blue back and sides, which may have fresh damage to the front, or whose driver may be acting differently.
“We need the industry to help us, to put a closure on the inquiry,” he said.