In two separate incidents, Assam police on Sunday arrested four persons and seized heroin worth of over Rs 15 crore from their possession, police informed.
In one of the incidents, the banned drugs were seized after the police received specific information and intercepted a truck carrying 3.45 kg heroin in Karbi Anglong.
Two persons, both residents of Manipur, were arrested and booked under the NDPS Act.
The seized drugs were en-route to Guwahati from Imphal.
In the second incident, a team of Assam police raided a house and seized 88 containers with 1 mg suspected heroin each min Morigaon district.
The police also recovered several other items stolen from temples and Jagiroad Paper Mill.
A couple has been arrested and booked under sections of the Indian Penal Code and the NDPS Act, the release added.