Terrace RCMP have confirmed that two fires Sunday are under investigation.
Fire crews were first called out just after 10 p.m. to an abandoned home in the 4700 block of Park Avenue.
As firefighters were knocking down the flames, a second call came in to a fire at the former CN bunk house near Kalum Street.
Police say both buildings were destroyed by flames.
Terrace Deputy Fire Chief Dave Jephson says both blazes are considered suspicious, adding that the abandoned Park Avenue house has been the subject of many complaints as a party site.
Jephson says there was no hydro, natural gas, or propane hooked up at the building which could have sparked the blaze.
The old CN bunk house was the scene of a fire earlier this June.
Anyone with information about either fire is asked to contact the Terrace RCMP.