SACRAMENTO (CBS13) — A woman was found dead after a fire at a modular home park in Sacramento late Sunday night. Investigators are now looking into the cause of the blaze.

The incident happened around 11:30 p.m. along the 6000 block of Dias Avenue.

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Sacramento Fire Department firefighting crews arrived and found a unit at the back of the park on fire. Firefighters were able to get into the residence, but it was too late. They found the woman’s body in a back bedroom. Her dog also died in the fire.

“We smelled the smoke and we went and looked out the back and it was in flames,” said Princetta Lewis, who lives nearby.

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Lewis’ husband called 911 after they saw the house next door was on fire. Lewis tells us an elderly woman by the name of Ms. Vicki lived there alone.

“I only saw thick smoke,” said another neighbor.

A neighbor tried to get in to rescue her but was unable to reach her.

“These mobile home units have a propensity to burn fast,” said Capt Keith Wade with the Sacramento Fire Department.

Arson investigators are trying to determine if the fire was suspicious

“They want to make sure they didn’t miss something that [indicates this] was an accidental fire as opposed to something caused intentionally,” said Wade.

Lewis says detectives responded to a call for service at that address earlier Sunday evening.

“The police asked my husband did we hear anything…and then right when they left that’s when we smelled smoke,” she said. “That is sad for anyone to go like that,” she said shaking her head.

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An official cause of death for the woman will be released by the coroner’s office.