The incident occurred on Thursday 15 October at around 3.37pm on Water Lane in Totton. Two PCSOs spotted a teenage boy who had been identified by security staff at the Asda supermarket on Maynard Road as a potential suspect, and upon approaching him, he fled the scene.
He was restrained by a member of the public and the PCSOs until officers arrived on-scene, whereby he was searched and found to be in possession of a suspected class A drug.
A 17-year-old boy from Southampton was arrested on suspicion of possession with intent to supply a Class A drug and intentionally obstructing a police officer. He was later released under investigation pending further enquiries.