An Arizona woman was mauled to death by a dog Friday and another man nearby was critically injured.

The Sierra Vista Police Department announced the incident in a press release on Saturday. Officers responded to a 911 call about a dog attack between Meadowlark Drive and Calle Del Norte.

"Officers arrived on the scene and found a dog attacking a male victim in the backyard of a residence on Calle Del Norte," police said in the release.

While the victim was being treated, officers found an 84-year-old woman with serious wounds in the alley behind a home and a second aggressive dog nearby.

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Calle Del Norte in Sierra Vista near where dog attack happend

Sierra Vista Police Department officers responded to a 911 call about a dog attack between Meadowlark Drive and Calle Del Norte. (Google Maps)

"A second female victim was found in the alley behind the residence as a second dog returned to the same yard where the first attack occurred," police said in the statement.

Sierra Vista resident Helene Jackson was taken to Canyon Vista Medical Center but died from her injuries later that night. Officers said her dog, who was also presumably attacked by the other dogs, was found dead in the alley where she was found.

The injured man, Sam Sanches Jr., 53, was taken to Banner Medical Center in critical condition. Police said both of the violent dogs were killed by officers.

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Sierra Vista Police Department

Sierra Vista Police Department killed both of the aggressive dogs on Friday. (Google Maps)

"The three deceased dogs were secured by the Sierra Vista Police Department’s Animal Control Office pending further investigation," police said.

The Sierra Vista Police Department asks anyone with information about the incident to contact them at 520-452-7500.

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Fox News Digital reached out to the Sierra Vista Police Department for more information but has not yet heard back.