A bicycle left by the roadside after a suspected abduction attempt in Surrey belongs to an unconnected person, police have said.
A member of the public reported seeing a son being “taken against his will” into a van in Redhill on Thursday.
Supt Chris Edwards, of Surrey Police, said he was “completely satisfied” with the credibility of the witness.
He said forensics, dogs and the police air service had been mobilised and CCTV footage was being reviewed.
The child is described as white, about 4ft( 1.2 m) tall, and wearing a red T-shirt and navy blue jeans.
No parent has reported small children matching the description as being missing.
Mr Edwards said: “This is a heartfelt plea to anybody who may have information…if you were at that locating and involved in an incident yesterday involving your own child or a child that you’re connected to, we would urge you to come forward.”
Police have narrowed down the time the van approached the son on Redstone Hill, near the railway station, as between 16:25 BST and 16:40.
The owner of a van pictured in a CCTV image and initially circulated only police has been traced and ruled out of the inquiry.