A popular dumpling restaurant in Manhattan has been shut down after a photo of a rat in the kitchen surfaced online, prompting the health department to do a surprise inspection.

The New York City Department of Health closed Prosperity Dumpling on Eldridge Street in Chinatown Thursday night.

An anonymous tipster sent a photo to the website, gothamist.com, of a back alley area where food is prepared at the restaurant. In the shot, a rat can be clearly seen on the ground. The person who took the photo said it was taken Sunday evening and that the photo had been sent to the health department.

The restaurant received an “A” grade in its most recent inspection on May 28, although the restaurant inspection cites “live roaches present in facility’s food and/or non-food areas” as one of its sanitary violations.