Early Tuesday morning, four families were forced out of their homes after an apartment building went up in flames. Police are treating the fire as suspicious, likely arson. But so far, only rumors as to who and why. Brian Dwyer has the latest from those who can't believe someone could actually take things as far as to put innocent lives at risk.

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WATERTOWN, N.Y. -- Friends and family of those who lived inside were repeatedly checking their phones Tuesday morning. They're hoping to hear that police had found whoever is responsible for destroying the homes of four families.

"It's my family's building," one neighbor named Chelsea said. "I looked out my window. I just saw all these flames coming out the roof. It was just covered. Horrible, just horrible."

As they waited, the state fire K-9 team arrived to help piece it all together. After several trips inside and around the front porch, officials tell the onlookers the dog was a big help.

"I live in the building right down here, the Dean building," another neighbor, Tom, added. "I woke up around 3 a.m. The building was engulfed. They had a girl up there that had to jump from the second floor over here because she couldn't get out the front."

It's a case that currently has more questions than answers. A gas can was recovered earlier that day, as well as other evidence later. Police actually had cuffed a man shortly after the fire was reported, but we're told the person brought in for questioning was released.

"It's disappointing you've got to live in the City of Watertown and see this stuff happen. I've seen a lot of it myself. I was a volunteer fireman," Tom added. "I've seen a lot of it happen. It's a tragedy to see anybody homeless."

And as they wait for more information, neighbors begin to pick up the pieces with their phones close by.

Witnesses tell us that the woman who jumped out of her second floor window was taken to the hospital with a severe leg injury.