The Ontario Fire Marshal has been called in to assist with the investigation of a blaze at an east Windsor bakery.

Windsor fire were called out to Rose City Bakery, which is located in the 4600 block of Tecumseh Road East, just after 7 a.m. on Friday. When crews arrived, they found thick black smoke coming from the building.

Fire officials were able to get a handle on the "stubborn" blaze and are now looking for an origin and cause.

Damage is said to be extensive.

No injuries have been reported.