Sarnia police temporarily closed sections of Christina Street, George Street, and Vidal Street due to a fire on Sunday at the Kenwick Building.
Emergency crews were called to the building's parking garage at approximately 9:15 a.m. on Sunday due to a vehicle fire.
No injuries were reported and the fire was not considered suspicious.
Police issued an update at 2:20 p.m. to advise residents that area roadways had been reopened.
Sarnia Fire Rescue Service's Public Education Officer Mike Otis said the cause is undetermined.
A damage estimate is unknown at this point, however, damage was reported to the vehicle itself and heat damage was also reported to a vehicle parked nearby.