Police are appealing for information after a 13-year-old girl was approached by a man on the recreation ground at Finborough Road, in Stowmarket.
The incident happened around 2.45pm on Saturday, July 8.
The teenager had attend the carnival with friends but, as she left to meet her mum, she was approached by a man who asked her to come with him and then took hold of her wrist. The girl said no and walked away.
The incident was reported to police on Sunday, July 9.
Police would like to speak to the man, who is described as white and was wearing a baseball cap and sunglasses, and are asking him or anyone who knows who he is to call Suffolk Police on 101, quoting crime number 47380/17.