Police are investigating after a rucksack containing three mobile phones was stolen at Worthing Lido.
The black Mountain Warehouse bag was taken from the amusement arcade at around 1pm last Sunday (October, 29).
Sussex Police have issued a CCTV image of a man they would like to speak to in connection with the incident.
Police have described the man as being white, short, of stocky build and with grey hair.
He was wearing a black top and trousers and was accompanied by a young child.
Sussex Police have asked the man, anyone who may know him, or those who have further information about the incident to contact them.
They can do so via the Sussex Police website or by calling 101, quoting the reference number 784 of 29/10.