(CBS) – An upscale Chicago gourmet grocery store was shut down Monday by the Chicago Health Department.

Fox & Obel, in the Streeterville neighborhood, closed abruptly. A sign on the door said the closure, for the remainder of the day, was “due to an emergency.”

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The store apparently is in the process of complying with several critical health code violations.

An inspection report said:

-There were 30 live cockroaches on the wall of a food preparation area.

-Hundreds of live fruit flies were observed.

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-The food-prep area needed a thorough cleaning.

-The floors needed to be re-grouted.

The city’s first inspection at the store occurred July 5 after a resident filed a complaint, Brian Richardson, a spokesperson for the health department,  tells CBS 2.

Inspectors found serious and critical violations, setting the stage for a follow-up inspection 10 days later, he said. Grocers could pass another inspection and reopen.

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No one could be reached at Fox & Obel.