Police recovered 4,500 yaba tablets from a private car on Chittagong-Cox's Bazar highway in Chittagong's Lohagara upazila yesterday.
The person who was driving the car was arrested in this connection, said Mohammad Shahjahan, officer-in-charge of Lohagara Police Station.
Acting on a tip-off, police halted the car in Chunati area of the upazila around 10:00am, he said, adding that the car was coming from Cox's Bazar.
The arrestee, Md Reaz, 25, of Bhola's Charfassion upazila, claimed that he recently bought the car. But he failed to show them any documents in favour of his claim, the OC added.
The police official said they were investigating the incident.