CHICAGO — Charges are pending against a man who police say sexually abused a 6-year-old boy inside the bathroom of a fast-food restaurant in the city’s River North neighborhood.

Around 5:45 p.m. Saturday, officers responded to the 600 block of N. Clark, at McDonald’s, for an assault in progress.

According to police, the boy was inside a bathroom stall when the suspect allegedly entered and sexually abused him.

Authorities say security at the fast-food restaurant attempted to detain the offender, at which point the offender assaulted the security officer. The offender resisted arrested when police arrived to the scene, but was taken into custody a short time later.

Police said the boy arrived at Lurie Children’s Hospital in good condition. 

The security guard declined medical treatment at the scene.

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An investigation is ongoing.