Police seized 100,000 pieces of yaba from a lorry and arrested its driver in Cox's Bazar yesterday.
The arrestee was identified as Korban Ali, from Noakhali.
Another man on the vehicle managed to flee during the raid, police claimed.
Korban was sent to jail after police placed him before Cox's Bazar sadar senior judicial magistrate court.
Acting on a tip-off, police stopped the vehicle in Khodaibari area under Islampur union on Chattogram-Cox's Bazar highway, said sub-inspector Sanjit Chandra Nath of Eidgaon Police Camp.
The yaba tablets, worth Tk 3 crore, were found in a packet under the driving seat, Sanjit claimed.
Police filed a case in this connection.