WINONA, Minn. (AP) — St. Mary’s University says the death of a 19-year-old freshman was due to natural causes.

Millie Harrison of Colorado Springs, Colo., died unexpectedly on Saturday. SMU says Harrison was a theater major studying stage management and communications. She was the production stage manager for one-act plays Saturday, which were canceled.

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Several hundred students attended a prayer service Saturday night on campus.

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The Winona Daily News reports SMU president Brother William Mann said it was “heartbreaking to see a young person, so filled with spirit,” taken so soon.

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