Police are appealing for witnesses after a number of violent robberies in Swindon.
CCTV images of three men have been released after four separate incidents in the town earlier this month.
Police say the group of youths were specifically targeting people's phones and wallets. Victims were assaulted and in one case hit over the head.
Wiltshire Police are encouraging anyone with information to come forward.
You can contact the police at Gablecross Police Station on 101 quoting ref 54180049935. Alternatively call Crimestoppers 0800 555 111 where details may be left anonymously.