ANN ARBOR, Mich. (WXYZ) - A small fire at the University of Michigan Student Union prompted a brief evacuation Friday morning.
Ann Arbor firefighters quickly extinguished the small fire on the fourth floor, which was reportedly sparked by construction workers who have been working in the building.
7 Action News was told that greasy dust somehow ignited.
Firefighters are working now to air out the building before letting anyone back in.
An investigation is under way.