The constable, Ravinder, was posted in Begumpur police station, they said.
On a tip-off, police intercepted a car in front of a hotel in Jahangirpuri and seized over 50 bottles of liquor meant for sale in Haryana, a senior police official said.
A case was registered under relevant sections of IPC and Excise Act and all the four were arrested, he said. AMP DPB