WINONA — Authorities say they don’t suspect foul play in the deaths of two 19-year-old Winona college students named Millie that occurred within four days of one another in April.

Winona’s deputy police chief Tom Williams said that St. Mary’s University freshman Millie Harrison died from a viral infection. Harrison, of Colorado Springs, Colo., died April 2.

Four days later, Millie Gadient of Goodhue died of a heart attack. Goodhue was a freshman at Winona State University.

The two deaths are not believed to be related.