On July 3, the mother of the boy lodged a missing complaint with the police. She said the boy had gone to play outside their house at around 11 am on July 2 and had not returned since then, said Deputy Commissioner of Police (North-east) A K Singla.
The complainant suspected that her son was kidnapped.
A case was registered on the basis of her complaint, said the police, adding that photographs of the boy were circulated among the beat constables and nearby police stations.
The boy told the police that he had wandered away while playing outside his house and eventually, arrived at the fair.