Derbyshire Constabulary are looking for a man who allegedly "grabbed the arm of a child" in Matlock earlier this week.
Officers say the incident took place around 2pm on Wednesday outside Marks and Spencer on Bakewell Road.
A police spokesperson said: "On Wednesday, October 31 at around 2pm a suspicious incident was reported to us where a man had allegedly grabbed the arm of a child.
"The child, who looked approximately three years-old was walking with a man and a woman along Bakewell Road.
"A witness saw a man, outside Marks and Spencer, grab the little girls arm. The witness alerted the couple and they continued to walk away with the girl.
"If you were the couple with the child or you have any further information could you please contact us on 101 quoting reference number 18000525084."