A teenager has been arrested after a robbery in Cassiobury Park.
A 16-year-old boy was threatened by a group of teens and his bag, wallet and mobile phone were taken.
Police launched a large search operation, and witnesses saw police cars heading down Rousebarn Lane in Croxley Green and parked on the road heading towards West Herts Golf Club.
A police helicopter was sent to the scene, along with a dog unit.
A 14-year-old boy was arrested in connection with the incident. He has been bailed until Friday, June 3.
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