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Justin Mostrom

Justin Mostrom

A Casper man was taken into custody Sunday after he allegedly threw his girlfriend on the ground, violently swung a car seat containing their child and then hurled his girlfriend’s cell phone against a wall while she was calling for help.

Justin Mostrom was arrested on suspicion of domestic battery, interference with a 911 call and child endangerment.

The Casper Police responded to a report of a family fight at a South Lowell Street residence at 6:41 p.m. Sunday, according to police documents.

A woman was crying in the driveway and officers observed multiple abrasions on her right arm and the left side of her neck, the documents state.

The woman told police she asked Mostrom to watch their children because she had been caring for them all day while he was at a neighbor’s apartment. She said he grabbed her by the neck, threw her on the ground and then swung a car seat containing one of their children before aggressively placing it on the floor.

Police documents state that the woman said she used her cell phone to call for help but that Mostrom grabbed it while she was on the phone with dispatch and hurled it at the wall. The alleged victim said she then took both of their children outside to wait for the police.

Mostrom told police that he had been drinking at the neighbor’s apartment for most of the day and said his girlfriend yelled at him when he returned home because he wasn’t helping to care for their children. He said his girlfriend slapped him after he attempted to prevent her from leaving the apartment, and that he then threw her to the ground and went into the bathroom, according to police documents.

Mostrom was taken into custody and transported to the Natrona County Detention Center.

Katie King covers the city of Casper.


Local Government Reporter

Katie King joined the Star-Tribune in 2017 and primarily covers issues related to local government. She previously worked as a crime reporter in the British Virgin Islands. Originally from Virginia, Katie is a graduate of James Madison University.

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