TROY, N.Y. (NEWS10) — Crews battled an active structure fire in Troy Sunday morning. The fire was on 5th Avenue and was out by 8 a.m.

The call came in before 4:30 a.m. Two people were trapped in the building at the time but were able to be rescued by firefighters.

No injuries have been reported. The fire chief said there was a mayday call at one point due to a firefighter falling partially through the floor. That firefighter is okay and remained on the scene.

The building is older, and the fire chief said these buildings are a challenge when it comes to fighting fires.

“They’re very difficult. Every building has voids and chases. The fire finds its way to spread throughout the building. This fire, although I don’t know where it started, worked its way up from a very low section of the building, all the way up through the cockloft,” said Chief Eric McMahon, Troy Fire Department.

At least three different fire departments were on scene. The cause of the fire is still under investigation.