Shopper films Banbury robbery aftermath
11 September 2012 Last updated at 21:54 BST
A shopper filmed the aftermath of a robbery at an Oxfordshire jewellers where a "have a go hero" detained one of the suspects.
Police said a gang, armed with a hammer, had stolen high value watches from a shop in Banbury's High Street.
A passer-by intervened and was helped by other members of the public to pin down suspects until police arrived.
Witnesses of the robbery, at 10:40 BST, should contact Thames Valley Police.