Runner who died in NE Minnesota race suffered cardiac arrest

GRAND MARAIS, Minn. (AP) - Authorities say a Twin Cities high school teacher suffered cardiac arrest when he collapsed and died while running a race in northeastern Minnesota last month.

The Midwest Medical Examiner’s Office released the cause of death of 41-year-old Jon Mathson of Eagan on Tuesday.

Officials say Mathson had coronary artery disease, a hardening of the arteries that supply blood to heart muscle. WDIO-TV (https://bit.ly/2sYBELf ) reports he had no medical history.

Mathson died May 20 while competing in the 25K Superior Spring Trail Race in Cook County. Authorities say first responders and an off-duty deputy worked to resuscitate Mathson, but he died at the scene.

Mathson taught earth science and chemistry at Eagan High School.

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Information from: WDIO-TV, https://www.wdio.com