A teenage schoolgirl ran away after being approached by a man in a car who offered her a lift.
It happened on the outskirts of Kinnerley, near Oswestry, at about 1900 BST on Tuesday.
The 14-year-old ran to a nearby house when the driver followed her along the road after she had declined a lift.
A police spokesman said they were anxious to trace the man who made no effort to get out of the car and made no threats to the girl.
The investigating officer, Det Con Paul Rogers said the incident, which happened next to a dirt track called Brookhouse Lane, could have been an totally innocent approach.
"I'm appealing for the driver to come forward so we can resolve the matter. His behaviour was suspicious and the young girl was understandably frightened," he said.
The car is described as a silver estate car, possibly a Peugeot, with the registration prefix "W".
The driver was white, in his early 40s, clean shaven with short blond hair and wearing round-framed glasses.