An 11 year-old boy has been left in a critical condition following a collision with a car in Milford Haven.
The youngster has been taken to University Hospital of Wales in Cardiff.
Milford Haven Neighbourhood Policing Team (NPT) confirmed Great North Road was closed to all traffic for several hours.
The closure extended towards Steynton traffic lights.
The road has now re-opened.
It is understood the collision happened near the junction to Blackbridge.
Earlier Milford Haven NPT tweeted: "Great North Road currently closed to all traffic, diversions in place, thank you for your patience."
Stacy 8012 - Great North Road currently closed to all traffic, diversions in place, thank you for your patience ! pic.twitter.com/9887sVhnra
— Milford Haven NPT (@MilfordHavenNPT) June 18, 2016
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