Acting on tipp-off, police arrested Mohammad Amir (28) and Firoz Khan (22) when they reached the foot-over bridge opposite Kishan Kunj, Akshardham temple, with the heroin to supply it to one Babbu on September 12, Joint Commissioner (Crime branch) Ravindra Yadav said.
They were caught by a team of Crime Branch that had laid a trap to nab them, he said.
The duo hailed from UP and had procured the heroin from a man named Ashfaq in Bisoli, West bengal.