Police are stepping up patrols after a fourth reported attempt in the Deepings to lure children into cars.
The latest incident took place at around 7pm on Tuesday night. Two men in a white van asked a 17-year-old girl to get into the vehicle in Thackers Way, Deeping St James. The girl refused and left the area.
This follows a number of similar incidents in the Deepings area over the last week.
At around 4.30pm on Wednesday, a man in a van approached an 11-year-old girl in Thackers Way, Market Deeping. The man, described as being of muscular build with a white baseball cap on, tried to entice her into his vehicle.
On Thurday at around 3.10pm in Millfield Road, Market Deeping, two men in a white van approached a 12-year-old boy and tried to entice him into the vehicle.
The same day a 15-year-old girl felt that she was being followed by a man in the Burchall Close area of Deeping St James.
Police say thankfully all of the children involved acted sensibly, left the area, returned home and told their parents.
Officers are urging parents not to panic, but to be vigilant and to give their children the usual common sense stranger danger advice. Anyone with information about the incidents is asked to contact Insp Mike Burnett by calling 101.