Four people are being helped by the Red Cross after they were forced out of their apartment by fire.
Now, firefighters are trying to figure out how it started.
Fire started inside a building on E Utica Street and Roeher Avenue, just before 11:00 p.m. Wednesday.
This fire quickly went to two-alarms, meaning nearly 60 firefighters were called to the scene.
Crews were able to stop flames from spreading from the first to the second floor, but there was concern about the people who lived there and those going in for a potential rescue.
"It posed great danger to the firefighters because typically, those buildings are heavily fortified and we have lost members in the past in buildings such as this one, so we like to get a lot of help to the scene," said Johnathan Eaton, Deputy Commissioner of the Buffalo Fire Department.
No one was hurt.
Damage here set at $200,000.