Police are anxious to trace three male persons involved in removing a cash box from inside a games machine at the Normandie Hotel, Tenby.
The incident occurred at 8.40 pm on Monday and the trio, who were in the premises at the time, are described as white and in their late 30s.
Anyone with information is asked to contact PC270 Terry Pugh at the town's police station on 0845 300 2000.