St. Louis police are investigating an incident in which a detainee at the City Justice Center reportedly assaulted a guard.

A spokesman for the St. Louis Metropolitan Police Department said officers were called to the jail at 200 S. Tucker Blvd. around 6:30 p.m. Wednesday about an assault. The initial investigation found that a 22-year-old detainee had assaulted a 40-year-old corrections officer. That officer went to the hospital for injuries to his face.

Police did not identify the suspect and said the investigation is ongoing.

The day before the assault, a detainee died of a medical emergency at the jail.

This story has been updated to correct the date of the detainee death.

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