Two motorcycle-borne miscreants entered into the medicine store yesterday and decamped with the cash after threatening its owner with gun, they said.
A. Krishana Murthy, owner of the medicine shop, was the only one present in the shop during the incident.
The incident was captured on CCTV cameras, installed in the shop.
"We are studying the footage of the CCTV. It showed at least two persons were involved in the incident, said inspector in charge of BN Pur police station, Deepak Mishra.