A mother pushing her baby in a pram was indecently assaulted at a Bridlington park, police say.
Officers are appealing for information after the 27-year-old woman was "inappropriately touched", as she walked along footpath that runs alongside Duke’s Park.
A police spokesman said: "The woman felt someone touch her inappropriately on the bottom and turned around to see the same man looking at her.
"He then turned and walked away towards Carlton Street."
Officers described the suspect as around 17-years-old, around 5ft 5ins tall, of medium build with collar length blond or ginger hair and carrying a blue rucksack.
The alleged assault happened on Wednesday December 7, beween 2pm and 2.15pm.
If you think you know who this man is or have any information relating to this incident please call 101 quoting log 379 of 07/12/16 or call Crimestoppers anonymously on 0800 555 111.