Wiltshire Police are appealing for witnesses following a robbery which happened outside McDonald's, Winchester Street, on Monday (2nd December).
In a statement, Wiltshire Police said, "At around 4pm, a known suspect pinned someone against a pillar and stole cash from their pockets.
"A 12-year-old boy has been arrested in connection with the incident and he remains on bail pending further enquiries.
"There were a lot of people in the area when this incident took place and we believe part of it may have been recorded on a mobile phone.
"Anyone with phone footage or knowledge of this incident is urged to contact 101 quoting crime reference number 54240142319."

ALABARÉ receives further funding to support homeless young people
Wiltshire Council calls on Government to invest in more social housing
Cigarettes and vapes stolen after burglary in Winterslow
Appeal after police officer shot on Salisbury Plain with suspected catapult
Wiltshire Council Cabinet approves Parking Plan and charges review
Salisbury Cathedral to Host Photographic ‘Portraits’ of All 42 English Anglican Cathedrals
Hundreds of NHS staff surveyed revealing abuse faced at work
Free school holiday swimming for eligible children starts this Easter
