A man was robbed at gunpoint in Brooklyn by a man wearing a blue surgical mask, police said Thursday.

The unidentified victim was inside Madison Food Market on Madison Street in Bedford-Stuyvesant at 7:19 a.m. when the masked man pulled out a gun, cops said.

After the heist, the thief fled toward Lewis Avenue, according to police.

It was not immediately clear what he had made off with. The investigation is ongoing.