Police raided a narcotics processing center hidden inside a smoke shop on Bushwick/Ridgewood border on Thursday morning, seizing large quantities of heroin and cocaine while arresting a man connected to the illegal operation.

Law enforcement sources said the 83rd Precinct executed a search warrant at 9:30 a.m. this morning inside the Gates Candy shop located at 1597 Gates Ave., off St. Nicholas Avenue, right across the street from Food Bazaar supermarket.

According to sources familiar with the investigation, police were tipped off by a Department of Finance inspector who visited the shop Wednesday night and noticed suspicious items indicative of a possible illegal drug operation.

What police found Thursday morning was an “old school” supply business, as one law enforcement agent described, with large amounts of heroin and cocaine, packaging envelopes, scales and related paraphernalia located in a secret room hidden behind a hollow wall.

The approximate street value of the seized drugs is being calculated, but police sources said it is well over $100,000.

Police also took into custody an unidentified man believed to be connected to the operation. His identity was not disclosed, and charges have yet to be announced.

This is a developing story; check back later with further details.

COVER: The seized drugs and paraphernalia filled a police truck. (Photo: 83rd Precinct/Twitter)