Two six-year-old girls have been sexually assaulted while visiting the Legoland theme park at Windsor.
The attack, by a man described as in his late teens or early 20s, happened at Castaway Camp in the Pirate Shores area of the Berkshire resort between 12.15pm and 12.30pm on Thursday.
The offender, who was not known to the victims, is described as a white man, possibly under 5ft 8ins tall, wearing dark-coloured slim-fitting trousers, a dark-coloured T-shirt and trainers.
Detective Inspector Penny Mackenzie, of Thames Valley Police, said: “I would ask anyone who visited the Legoland Windsor Resort yesterday, especially if you went to Castaway Camp in Pirate Shores, to check any photographs from your trip to see if you recognise anyone matching the offender.
“Also, if you recognise the offender’s description or have some other information, no matter how insignificant you think it is, we want to hear from you."
Anyone with information can contact police on at URN615@thamesvalley.pnn.police.uk, or call 101 or call charity Crimestoppers anonymously on 0800 555 111.