It's unclear what started the fire.By Jessica Guay

HARMONY TOWNSHIP (KDKA) — A massive fire ripped through an apartment building in Beaver County on Sunday morning.

According to firefighters, a neighbor rescued a woman and her baby from one of the units on fire.

The damage to the apartments shows just how intense the flames were and a heroic neighbor stepped into action when he saw a woman and her baby exiting a window onto the roof of the porch.

He got a ladder, put it up, and got them down.

The mother and her child were taken to the hospital to be treated for smoke inhalation.

The apartment building in the 600 block of Stephens Street in Harmony Township went up in flames and the result was three apartments damaged and five people left without a place to live.

Ten fire departments were called to the scene around 11:00 a.m.

Harmony Township Fire Chief Patrick Shearer said they had some problems with water and had to pull all firefighters out of the building at one point.

That was until tanker trucks arrived with the water they required.

Once the flames were extinguished, Shearer commended the neighbor for his bravery.

“We could be talking different, seconds matter, he did a great job with helping get her down,” he said. “When I pulled up, he had gotten her to the ground and we got them away from the structure but yes, seconds matter.”

Firefighters also rescued a cat from the fire and now the Red Cross is providing assistance.

Beaver County 911 tells KDKA that when Big Sewickley Volunteer Fire Department was on its way to the scene, a firetruck was involved in a crash.

The driver of the vehicle that collided with the firetruck was transported to the hospital and their condition is not known at this time.

Tonight, on KDKA News at 10 and 11, Jessica Guay will have more from neighbors who witnessed the fire.