The Ontario Fire Marshal's Office has been called in to try to determine the cause of a house fire on College Avenue South.
Sarnia Fire and Rescue responded to the 100 block between Davis Street and Wellington Street at about 2:45 p.m. Wednesday.
Sarnia police said the blaze was quickly brought under control and no injuries were reported.
Police are holding the scene while the investigation continues.
-With files from Colin Gowdy