WEST MOUNTAIN, Utah County — Police tracked GPS signals from 911 calls to find a man accused of detaining a teenage family member and pointing a loaded rifle at her while he was drunk.

The argument began over a game of Battleship, police said.

Police in Utah County were dispatched Saturday night after a series of 911 calls came in but no one responded on the other end. Dispatchers heard a female voice arguing with a man and claiming the man had pulled her by her hair and pushed her down, according to a police affidavit filed in 4th District Court.

The calls were tracked to the area of LeBaron Point near Lincoln Beach Road, where police found John Richard Valenzuela, 68, and the 17-year-old girl in a trailer. As officers approached the trailer, they reported hearing pounding coming from the trailer and seeing a physical argument between the two people inside.

The girl was "hysterical" as she ran from the trailer to police, according to the affidavit. She told officers she and Valenzuela had been playing Battleship when he accused her of cheating and broke the game, then grabbed her and pulled her back into the trailer when she tried to leave.

Valenzuela told police he had tried to keep the teen from leaving for her own safety.

The girl grabbed Valenzuela's cellphone and called 911 before he grabbed her wrist and took it back, police said. She continued making calls from her own, concealed cellphone, not knowing whether they were going through.

When the girl got out of the trailer, Valenzuela caught her, pushed her down and dragged her back to the trailer by her hair, she told police. He then threatened her and pointed the loaded rifle at her head.

Valenzuela was found to have a blood-alcohol level of .113. He was booked into Utah County Jail for investigation of unlawful detention, aggravated assault, criminal mischief, intoxication and interrupting a communication device.

Court records indicate Valenzuela has a history of misdemeanor alcohol-related offenses dating back to 1990.

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