TULSA, Oklahoma - A Jenks man has been sentenced to federal prison after a jury convicted him of assaulting his girlfriend and causing severe injuries during an argument in 2024, federal prosecutors announced.

According to the United States Attorney's Office for the Northern District of Oklahoma, 27-year-old Jamon Charles Phetsacksith was sentenced by Sara E. Hill to 33 months in prison followed by one year of supervised release.

A federal jury convicted Phetsacksith in January of assault resulting in serious bodily injury in Indian Country.

Prosecutors said the assault occurred in November 2024 after Phetsacksith and his girlfriend had been drinking together before driving to his workplace to pick up a paycheck after hours.

According to testimony presented at trial, the couple began arguing after arriving at the location.

The victim testified she attempted to leave to calm the situation, but surveillance video showed Phetsacksith chasing after her and preventing her from leaving before pushing her, prosecutors said.

Jurors also heard a 911 call in which Phetsacksith claimed the victim had fallen down a flight of stairs and needed medical attention.

Authorities said the victim later told EMSA personnel she had actually been assaulted.

Officers with the Tulsa Police Department responded to the scene, and body camera footage played during trial captured Phetsacksith admitting the argument “got out of hand” and stating he had “thrown her around.”

A trauma surgeon testified that the victim suffered multiple fractures, including a broken ankle and tibia and fibula fractures severe enough to require surgical rods and screws.

Federal prosecutors said Phetsacksith is a member of the Osage Nation and will remain in custody pending transfer to the United States Bureau of Prisons.

The case was investigated by the Federal Bureau of Investigation and the Tulsa Police Department.

Assistant U.S. Attorneys Mallory Richard and Stacey Todd prosecuted the case.