As Oswego firefighters searched a house that caught fire Sunday morning, they saw flames shoot through the roof.
Firefighters were ordered out the house, at 123 W. Bridge St., because it was too dangerous to be inside, Oswego Fire Capt. Paul Conzone said.
Shortly after they exited the two-story, vacant house, the roof collapsed onto the second floor, he said.
No one was injured in the fire.
Oswego police and firefighters are now investigating the fire, which closed a portion of West Bridge Street, also known as Route 104, a main thoroughfare in the city of Oswego.
Someone on West Cayuga Street -- one street to the north of the house fire -- saw flames and called 911 at 6:52 a.m.