The NYPD confiscated 400 pounds of pot on Monday afternoon at a Brooklyn warehouse, police sources said.

Four men were trying to pick up packages at a warehouse at 500 Gardiner Avenue in East Williamsburg around 4:30 p.m. when they were questioned by a manager who asked what they were doing.

The men fled without the packages so the manager opened them up. He called cops when he realized they contained a large quantity of marijuana, the sources said.

There were no further details immediately available.