Two private cars of same make, colour and bearing identical registration number were seized in the Kathua district on Saturday, police said.
A police spokesman said they have arrested a man in this connection.
The person was arrested after the owner of one of the cars lodged a complaint with the Lakhanpur police station that another car of the same make, colour and registration number is plying in the town.
The complainant also said that he had purchased his car from a person named Mohammad Rafiq, a resident of Hatli village in Kathua. Police said Rafiq was arrested after it came to light that he has recently purchased a brand new car and intentionally used the same registration number.
The spokesman said that a case has been registered and police are seeking clarification from authorities concerned.