'Drugs for sale' message catches man dealing to Bridgend
A message sent out by a drug dealer advertising ecstasy tablets was used to convict him after part of his finger was visible.
It was found on the phone of a man was arrested in Bridgend as part of a drugs operation.
This started a pioneering operation that took police 120 miles from Bridgend to Redditch, Worcestershire.
In the end, a finger print taken from the photograph helped to secure 11 convictions.
Dave Thomas of South Wales Police's scientific support unit described the use of this new technology as "groundbreaking".