University of Minnesota police are investigating an “incident” involving a dead person at the Mechanical Engineering building on the Minneapolis campus, authorities said Tuesday night.

Witnesses said there were numerous squad cars outside the building starting around 6:45 p.m. A Hennepin County Crime Lab vehicle was seen at the scene at 8:45 p.m.

The University News Service said all inquiries were being directed to the Hennepin County medical examiner’s office.

This is a developing story. Check back with StarTribune.com for more information.