As Kumar raised alarm, the accused escaped from the spot, he said.
The shopkeeper alleged that he had called police thrice and reported the incident but the policemen did not act swiftly.
A case has been registered under relevant IPC sections against three unknown persons, the police said.
An investigation is underway in the matter and efforts are on to nab them with help of CCTV camera footage in which the incident was recorded, the officer added.
(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)