Sarnia fire officials say careless smoking caused a fire at mid afternoon Tuesday that extensively damaged a house on Cameron St.
The blaze destroyed the back deck of the home in the 200-block of Cameron near Russell St. and spread into the home's attic causing $80,000 damage.
No one was injured.
Fire Life Safety Educator Mike Otis says the entire rear of the house was engulfed in flames when firefighters arrived before 3pm.