Police have shut down the parking lot a the Walmart in Dearborn, located at Ford Road and the Southfield Freeway.
People inside the story tell us they are not being allowed to leave in their cars.
Both Dearborn and Detroit police are on the scene. The Dearborn bomb squad is on their way to the scene.
Stay with 7 Action News and WXYZ.com for the latest on this breaking news.