The police presence in Irthlingborough has been stepped up after reports of three suspicious incidents in the area in which children were approached by two men in a white van.
Police say the men, in what was possibly a Ford Transit van, offered the children sweets and asked them to get into the vehicle.
The first incident happened at about 5.30pm on Wednesday, October 2, when children aged six to eight were approached in the pocket park in Allen Road.
The second incident happened at 4.05pm yesterday (Thursday, October 3) when two teenage girls were approached in College Street.
A third incident took place at about 8.10am this morning (Friday, October 4) when a 13-year-old girl was approached as she crossed Wellingborough Road, opposite Whitworths.
Safety advice has been given out by local schools.
Northamptonshire Police says officers are working to establish the full facts of what has taken place and would like to reassure members of the public that no children have been taken by the men.
Sergeant Andy Maher said: “We are making enquiries to establish exactly what has taken place. I would urge parents, carers and children to remain vigilant and ask anyone who witnesses any suspicious behaviour to call us on 101 or 999 if a crime is in progress.
“We would also urge anyone who may have witnessed the three reported incidents to contact us as soon as possible on 101.”
Witnesses to these incidents, or anyone with information, should call Northamptonshire Police on 101. Information can also be given anonymously to Crimestoppers on 0800 555 111.