Sub-Divisional Police Officer Gayatri Sonowal said a team led by her yesterday apprehended the three persons and recovered the rhino horn, weighing 1.5 kg, near Na-Ali Dholi bridge.
The three persons have been identified as Aminur Rahman, Sanjay Kumar and Surjya Thakuria, who is a RPF personnel and hails from Dibrugarh, she said.
The trio alighted from the Inter-City Express at Mariani and boarded a car which was on the way to Jorhat when the vehicle was intercepted by police, the SDPO said.