MORENO VALLEY (AP) — Investigators have determined a Southern California woman found dead in her backyard was mauled by two neighborhood pit bull mixes.

Moreno Valley police want the dog owner charged.

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The body of 53-year-old Christina Casey was found by a neighbor on Nov. 2 behind her Moreno Valley home, but authorities didn’t immediately determined the cause of death.

Sgt. Jaime Briones told the Riverside Press-Enterprise on Tuesday that investigators have now confirmed neighborhood pit bull-Weimaraner mixes mauled the woman. The sergeant says a forensic dentist determined the dogs were responsible.

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Police will ask Riverside County prosecutors to file involuntary manslaughter charges against the dog owners, whose names haven’t been disclosed.

The dogs have been quarantined.

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