NEW YORK (CBSNewYork) — Investigators said the owner of a Brooklyn maraschino cherry warehouse shot and killed himself Tuesday, as he was being questioned on an environmental issue by investigators who later smelled marijuana.

As CBS2’s Weijia Jiang reported, it all started when investigators from the Brooklyn District Attorney’s office came to the warehouse in at 157 Dikeman St. in Red Hook with an administrative search warrant. They were joined by investigators from the New York state Department of Environmental Conservation, and city Department of Environmental Protection.

The investigators came to the warehouse Tuesday morning to find out whether Dell’s Maraschino Cherries was illegally dumping potentially hazardous materials and chemicals they used to process the cherries into the sewer system, sources told CBS2. Crews were seen looking underground as part of the investigation.