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Casper Man Sentenced to Federal Prison for Antisemitic Threats

April 13, 2026

News – Sheridan Media

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A Casper man will be spending time in a Federal prison for making antisemitic threats. Sheridan Media’s Ron Richter has the details.

Casper Man Sentenced to Federal Prison for Antisemitic Threats

U.S. District Judge Scott W. Skavdahl recently sentenced 31-year-old Derek Fulfer of Casper to 12 months and one day in a federal prison for transmitting threats in interstate commerce. Fulfer was ordered to self-surrender to the Bureau of Prisons by June 1. Federal prosecutors said Fulfer made four rapid-fire phone calls on March 5, 2025, to Anti-Defamation League offices located in Colorado and Texas. When no one picked up, he left voicemails with antisemitic slurs and explicit threats of violence targeting people of Jewish faith. Staff immediately alerted federal law enforcement.

The FBI launched an investigation, traced the calls back to Fulfer, and confirmed his identity as the voice behind the threats. When questioned by agents, Fulfer admitted making the calls and

claimed his threats of violence were protected speech. Fulfer waived indictment and pleaded guilty earlier this year. U.S. Attorney for the District of Wyoming Darin Smith said Jewish Americans have every right, not as a courtesy, not as a privilege, but as Americans, to live, to worship, and to serve their communities free from threats of violence.

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Last modified: April 13, 2026

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