Michigan school mourns death of soccer player from Missouri.

MARQUETTE, Mich. (AP) -- Officials at Northern Michigan University in Marquette are investigating how a freshman soccer player from Missouri drowned during a team workout in a school swimming pool.

The Mining Journal of Marquette reports that 18-year-old Arianna Alioto of Columbia drowned shortly before 6 p.m. Friday at the Physical Education Instructional Facility.

Alioto redshirted this fall while recovering from a knee injury.

The newspaper reports that Alioto was a 5-foot-3 center midfielder who attended Rock Bridge High School. She also was a member of Missouri's Olympic development team.

Northern Michigan head soccer coach Matt Granstrand in a statement that "it's hard to grasp that Arianna was with us one moment and gone the next. Her death is devastating."

Northern Michigan University is in the state's Upper Peninsula.