CHICAGO (CBS) — A 75-year-old man was found dead in the restroom of a Brighton Park McDonald’s Sunday, police said.

Around 2:30 p.m., the man was discovered at the restaurant in the 3800 block of South Archer Avenue.

He was taken to Mt. Sinai Hospital and pronounced deceased.

Police are investigating the cause of death and said they do not think it appears to be foul play.