MINNEAPOLIS (WCCO) – A woman had to be hospitalized after she was apparently bitten by a Coon Rapids police K-9 early Sunday morning, authorities say.

Police say officers received a 911 call at about 6:40 a.m. from a residence at 2740 121st Lane NW. The caller said she saw a person more than 5 feet tall wearing a black coat in her backyard walking toward Crooked Lake Blvd. NW. The caller then became frightened by a loud noise coming from the back of her residence, police say.

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Officers arrived on scene, set up a perimeter around a structure with windows in the back of a property next door to where the call came from. Authorities saw a flashing light being used in the structure, and used voice commands to order the person outside. Police say they gave orders for five minutes.

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Authorities then entered the building with a K-9, and found an 81-year-old woman inside. She suffered bites to her arm. Police did not know if the K-9 was on a leash or under the control of a handler, but officers did enter the building immediately after the K-9. Authorities say the woman lived at the address where the K-9 entered.

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She was treated at the scene and taken to Mercy Hospital for further examination. She has not been identified, and the incident remains under investigation.