I associate Denny’s with heart attacks: fun in my youth, but now, not so much.

Now I can associate Salmonella with Denny’s.

Three confirmed cases and one suspected case of Salmonella Montevideo are being investigated by Olmsted County Public Health Services and the Minnesota Department of Health, according to a news release.

As of Friday, they had not found a specific food source, said Shaylene Baumbach, a public health educator for Olmsted County. They are investigating the possibility that a Denny’s Restaurant patron or employee brought in the foodborne illness.