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Officials are investigating the death of a woman and her dog under suspicious circumstances at a senior living community in Pomona on Monday, officials said.

Firefighters responded to the Serenity Villas Senior Community in the 100 block of East Bonita Avenue shortly before 6 a.m. in response to a report of a fire sprinkler activation, Los Angeles County Fire Department officials said.

A second call a little over a half an hour later resulted in firefighters discovering a unit with its carpet on fire and the body of a woman.

The victim was identified as 58-year-old Ronny Wall.

“Pomona police Investigators are currently working with the coroner’s office to determine the cause of death,” police said in a written statement. “The victim’s identity is not being released pending notification of next of kin.”

The death was initially reported to coroner’s officials as an apparent homicide.

Neighbors are in disbelief.

Neighbors told KTLA that the woman was often seeing walking her dog or going to the mailbox in the community.

The woman had a man with her on Sunday night, neighbor Rory Santellan said.

“It was surprising to see her with that guy,” he said. “He looked mad, but they weren’t arguing… he just looked mad.”

Police released no further details.