They found the body of a 55-year-old man while responding to a fire in Thorold.
A residential building went up in flames in the Front Street North and Albert Street East area early this morning.
The units were evacuated as firefighters got the blaze under control.
The body was later found inside one of the units.
No one was hurt and the Ontario Fire Marshall has been called in to investigate.
The NRP is also investigating the matter.

Region Updated on Measles Outbreak
St. Catharines Draws X Through X
Police Looking for Laundry Thief
Toronto Man Charged with Trafficking
Niagara Falls Man Charged with Trafficking
Painting Honours Kristen French
Keeping Douglas Memorial Public is Goal: Mayor
Tourism Awards Received in Niagara