A woman in her late 50s was found dead Monday along with her small dog in an apartment at a senior living facility in Pomona.
The woman, Ronny Wall, was found just before 6 a.m. in what police are calling a suspicious death investigation.
The investigation was taking place in a third-floor unit at Serenity Villas apartments for seniors.
Neighbors said a sprinker alarm went off at around 4 a.m. and firefighters responded to the senior living community two hours later.
"We never see her with a man," said neighbor Rory Santillan, "all of a sudden she drives up, there's a man getting off with her and I don't know what happened after that."
At around 7 p.m. Monday night and after hours of being on scene, police say the sprinkler system went off because of a fire in the apartment.
It remains unconfirmed whether the fire was intentionally set to cover up the woman's death.
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Police continue to investigate the situation and are in the process of notifying the woman's family.