Officers are conducting extra patrols in the Beverley Westwood area following reports of a man behaving suspiciously.
On Tuesday 18 August, a woman reported that the previous Friday (14 August) she had seen a man behaving suspiciously whilst she was out with her mother and two six-year-old daughters.
The woman reported that the man followed the family for some time and she saw him at one point with his hand down his shorts.
He is also believed to have spoken to one of the children, asking them to go with him, to which the child refused and the family left the area.
Detective Inspector Andy Crawforth said: “Investigations are underway to identify this man and establish what happened, as understandably this is quite a concerning incident.
“The man is described as white, in his 30s, around 6ft tall and of large muscular build with dark hair. He was wearing a black or blue t-shirt and shorts.
“We have extra patrols taking place in the area through the local neighbourhood policing team to offer reassurance and to gather any information.
“Enquiries are underway to establish if this incident could potentially be linked to two previous reports, one in April and one in May of this year.
“Neither of these incidents were reported to have involved a man directly speaking to a child, however a male of a similar description was reported to have been seen acting suspiciously.
“Investigations into all three reports are being carried out by our Criminal Investigation Department to identify the person or people involved and to establish any connection.
“I would encourage anyone with information that may assist our investigations to call us on our non-emergency 101 line quoting log 422 of 18 August 2020. Alternatively you can call the independent charity Crimestoppers on 0800 555 111.”