A customer at the Nigerian Kitchen, 1363 W. Wilson, Chicago, called 311 after claiming to see staff using cooking utensils to kill mice.

The restaurant was closed Monday after city health inspectors found mouse feces throughout the restaurant, cockroaches crawling on a wall and wastewater backing up from three clogged sinks in the kitchen.

Inspectors also found a mop sink filled with dozens of tomatoes and green peppers — cut and whole — and ordered them discarded,

Chicagoans who believe a restaurant or other licensed food establishment is operating in an unsafe manner are encouraged to call 311.