3:53 p.m. update:
Flames have engulfed a home in the 1000 block of Third Line East. Police are asking the public to avoid the scene.
3:46 p.m. original story:
Third Line East is closed between Birkshire Place and Old Garden River Road as firefighters battle what appears to be a significant fire.
Plumes of heavy black smoke could be seen from as far away as the Bruce Street hill area.
Sault Police have closed off Third LIne. Paramedics are also on scene.
More to come. . .