Damage is said to be extensive after a fire at a rural home in Brooke-Alvinston on Wednesday night.
Fire crews were called to the blaze, at 7392 Petrolia Line, near Ebenezer Road, at around 10 p.m.
Fire Chief Steve Knight said when they arrived, the structure was fully engulfed in flames.
"Our response was very good," said Knight. "We had over 20 firefighters from our station, as well as help from Watford, Warwick and Petrolia crews with mutual aid. Because of the construction of the house, it was an older structure, there was a lot of clean-up work at the end of it. The overhaul took a lot longer and we were there overnight."
Knight said the Brooke-Alvinston station returned to service at 10:48 a.m. Thursday.
He said there were no injuries, as the homeowner discovered the fire when they arrived home.
The Ontario Fire Marshal's Office has been notified and will be investigating to determine the cause.
More information has not been made available.
Meanwhile, a fire Tuesday evening in Sombra is believed to have been caused by a cutting torch.
St. Clair Township Fire Chief Richard Boyes said Port Lambton, Beecher and Wilkesport stations responded to the blaze on Smith Line.
No injuries were reported and a damage estimate was not immediately available.
It was a busy day for St. Clair Township Fire. Firefighters also dealt with a brush fire late Tuesday morning near the railroad tracks in the area of Rokeby Line between Highway 40 and St. Clair Parkway.
-With files from Stephanie Chaves