BUCKS COUNTY, Pa. (CBS) –-A fire that claimed the life of a woman trying to save her pets earlier this week has been ruled accidental.

It happened on Wednesday in the 2700 block of June Avenue.

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Authorities say 39 -year-old Tabetha Oakes Rutecki died in the blaze after she ran back into her  fully engulfed  home in Bensalem to rescue her pets. Firefighters say a dog and cat also died in the fire.

On Friday, investigators said they believe that the electrical fire originated in the living room of the home.

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“Once your outside, let us know, let the first responders know that your dogs are inside, that your cats are inside, your loved ones are inside, we’ll go and we have the equipment and training to go do that stuff,” said Bensalem Township Fire Department Battalion Chief Rob Sponheimer. “We just ask the public to never re-enter the dwelling that’s on fire once you’re outside.”

Police say two other people were taken to Aria Torresdale Hospital for treatment.

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One volunteer firefighter sustained a minor injury while fighting the fire.