He was intercepted near Dum Dum Road under the jurisdiction of Chitpur police station on Thursday night when he was waiting for someone.
The heroin was seized from his backpack, the police officer said.
"The market value of the material is around Rs 35-40 lakh. The accused did not reveal much during interrogation. It seems that accused is a delivery man. He will be produced before the city's NDPS court Friday," the police officer said.
(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)