Date: 06-13-2025

Case Style:

United States of America v. Jason Sieber Sr.

Case Number:

Judge: Ricardo S. Martinez

Court: The United States District Court for the Western District of Washington

Plaintiff's Attorney: The United States Attorney’s Office for Seattle

Defendant's Attorney:

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Description:

Seattle, Washington criminal defense lawyer represented the Defendant charged with brutal and lengthy assault of intimate partner
Whatcom County man sentenced to 4+ years in prison for brutal and lengthy assault of intimate partner

A 50-year-old member of the Lummi Nation was sentenced today in U.S. District Court in Seattle to 51 months in prison for assault resulting in serious bodily injury, announced Acting U.S. Attorney Teal Luthy Miller. Jason Sieber Sr. was charged federally in February 2024, for the October 20, 2023, assault of his then intimate partner. Sieber has been detained at the Federal Detention Center at SeaTac since his arrest in February 2024. At today’s sentencing hearing U.S. District Judge Ricardo S. Martinez said, “This was a horrific attack over a long period of time – it could have ended her life.”

According to records filed in the case, Sieber became angry with the victim over the amount of time it was taking her to cook dinner. He struck her repeatedly in the face and head and kept her from leaving the home to get help. The blows with his closed fist caused the victim to suffer facial fractures, extreme pain, and disfigurement.

Prosecutors described the assault in their sentencing memo: “Sieber’s assault of Victim 1 on October 20, 2023, was brutal and prolonged. Over the course of multiple hours, Sieber repeatedly beat his intimate partner, breaking her nose and fracturing bones in her face. As Sieber himself admitted, his actions ‘caused her to suffer extreme physical pain, as well as protracted and obvious disfigurement.’ In addition to punching and slapping Victim 1, Sieber tied Victim 1’s feet to hooks in his bedroom ceiling, leaving her suspended and trapped for 45 minutes. He burned her using a cigarette and strangled her, while telling her how easily he could end her life.” In court today, Assistant United States Attorney Carolyn Forstein recounted those threats Sieber made to the victim. “He said ‘I could kill you right now and stuff you in a crab pot and no one would ever find you.’”

The victim reported the assault to Lummi Nation Police ten days after the assault. Sieber was originally charged in tribal court. The case was ultimately referred to federal prosecutors.

Even after Sieber was charged with the assault he attempted to have the victim change her account of what happened. For that conduct the judge determined that he had tried to obstruct justice.

Sieber will be on three years of supervised release following prison.

The case was investigated by the Lummi Nation Police Department and the FBI as part of the Safe Trails Taskforce.

The case is being prosecuted by Assistant United States Attorney Carolyn Forstein and former Assistant United States Attorney J. Tate London.

Outcome:

Defendant was found guilty and sentenced to 51 months in prison

Plaintiff's Experts:

Defendant's Experts:

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