Police arrested a California man after he shot at his family while they opened Christmas presents, police said.

Austin Alvarez, 23, shot and killed his grandmother and his father's girlfriend before turning the gun on his father on Dec. 25 as the family was gathering to exchange gifts, the Fresno County Sheriff’s Office said in a news release.

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"During the visit, Alvarez fired shots striking his grandmother (Magdalena Alvarez) and his father’s girlfriend (Meisa Rashid)," the release said. "As Alvarez was leaving the house, he noticed his father in a parked vehicle. Alvarez fired shots in his direction, but did not strike him."

Deputies responded to the residents in Reedley at around 1:45 p.m. and discovered the two women with fatal gunshot wounds. They discovered that Alvarez fled the home in his GMC pickup truck.

Deputies found Alvarez near the intersection of American and Anchor avenues in Orange Cove and took him into custody, according to the release.

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Investigators say that the motive for the shooting is not known at this time. However, an investigation is continuing.