Fire crews have been called the Chrysler Assembly Plant in Windsor after the roof caught fire.
The Windsor Fire and Rescue Service says on Saturday around 5:40pm, firefighters attended the blaze in the 2100-block of Chrysler Centre. The fire was contained to a small, 8 meter section of the roof.
Fire officials say the blaze was caused by "accidental ignition." A damage estimate is unknown at this time.
Windsor police closed Chrysler Centre between Somme and Grand Marais while firefighters were at the scene. The road has since been reopened.