We're learning more about the woman who died in a Chattanooga house fire and the arson investigation.

It's unclear who may have ignited the flames, investigators are now offering up a $5,000 reward for any information that leads to an arrest. 

Flowers, candles and a teddy bear now sit outside of Kimberly Wells' home, friends say she was a sweet grandmother and good neighbor. They can't understand why anyone would want to hurt or kill her. 

"She was a good woman as far as I know," said one neighbor. "She didn't mess with nobody."

Neighbors along Rubio Street are in disbelief, officials say Wednesday's early morning fire is now being investigated as a deadly arson. 

"The fire investigators strongly believe the fire was intentionally set and so they've asked for assistance from the Violent Crimes Bureau of Chattanooga Police Dept. "They're going to work jointly on this,' said Bruce Garner, spokesperson for Chattanooga Fire Dept.

The call came in around 5:30 a.m Wednesday morning. Cell phone video captured heavy smoke and flames pouring out of the back window.
Firefighters pulled found Kimberly Wells with severe burns, lying unconscious on the floor. They got her out and into an ambulance. She died the next day at a burn center in Augusta, Ga. 

"Neighbors feared the woman's two young grandchildren were still inside of the burning home but firefighters cleared the home, finding it empty. 
 
"I wish them the best you know through their life I just wish them the best," said friend Ronnie McKay. 

The house is a total loss along with all of the precious memories inside. 
 
"She didn't bother nobody she just sat there, she was just friendly," said McKay. "You ever meet a friendly person, that was 1 of them"

Police are following leads but they need your help. If you saw anything out of ordinary, say something to police. 
 

"It's a very serious crime we take it very seriously and we're hoping we can make an arrest on this," said Garner. 

There is a $5,000 dollar reward for any information leading to the arrest of the person or persons responsible. If you have any information that can help investigators call Tennessee Arson Hotline at 1-800-762-3017.