Police say a hit-and-run in which a 10-year-old boy was knocked down by a motorcycle could have had "fatal consequences" for the victim.
Investigations are continuing into the serious crash which happened at a pedestrian crossing on Ferry Road in Edinburgh on Saturday night.
Door-to-door inquiries are continuing and CCTV footage from the area is being examined to identify the driver of the motorcycle that struck the boy as he used the pedestrian crossing at 6.35pm.
The 10-year-old victim is now in a stable condition and police say it is too early to assess the impact of his injuries.
Detective Chief Inspector Paul Grainger said: "This was a terrifying incident which could easily have had fatal consequences and both the boy's mother and I would urge anybody that has any information to contact the police.
"This young boy was going about his own business, making a routine crossing of a busy road at what should have been a safe pedestrian crossing when he was mown down by this motorcycle."
The victim is undergoing surgery as a result of his injuries and police say it is too early to assess what impact these may have on his life.
DCI Grainger added: "We have a number of reports at this stage of dangerous and reckless driving behaviour of motorcyclists in the area in the early evening of Saturday night.
"At the time the boy was struck, two motorcycles, each with one person on board, appear to have gone through a red light at the pedestrian crossing when the boy was crossing as he should."
The first red motorcycle was being ridden by someone with a red and black distinctive ski-type jacket and a full face crash helmet which was white with a purple and orange design on it.
The second motorcycle was a white Triumph Daytona 650cc. The rider struck the boy on the crossing, and carried on for a short distance before abandoning the machine and running off.
The rider was wearing a grey hooded top, dark tracksuit bottoms and a white full face helmet with a coloured design on it.
Both motorcyclists had scarves covering their faces. The abandoned Triumph motorbike was stolen earlier in Edinburgh.
Superintendent Mark Rennie said "This has been a shocking incident which has deeply affected the local community.
"Despite that, a small minority of offenders continue to steal motorcycles and put themselves and others at risk.
"I would reassure local residents that patrols are ongoing across the area in this regard and anyone who has any concerns, or indeed information which they would wish to pass on, should talk to our officers."
Anyone with information on the incident is asked to call Police Scotland on the 101 number.
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