A Pennsylvania man who on social media went by the handle “Mr Satan” has pleaded guilty to threatening to murder President Donald Trump and threatening attacks on ICE agents.
Shawn Monper, a 33-year-old resident of Butler, pleaded guilty to two counts of threatening to assault and murder U.S. officials and federal law enforcement officers before U.S. District Judge W. Scott Hardy.
According to a press release issued Monday by the U.S. Attorney’s Office, Western District of Pennsylvania, per the plea agreement, Monper also accepted responsibility for the other charges he faced.
From January through April of last year, Monper posted a series of threatening messages on YouTube regarding Trump and other federal officials, issuing multiple threats against them.
According to authorities, in February 2025, Monper used his “Mr Satan” account to post that “I have bought several guns and been stocking up on ammo since Trump got in office.” Then, in March 2025, he allegedly wrote that “Eventually im going to do a mass shooting.”
“Nah, we just need to start killing people, Trump, Elon, all the heads of agencies Trump appointed, and anyone who stands in the way,” Monper said in February of last year.
“ICE are terrorist people, we need to start killing them,” he stated in another post from March 2025, also under his “Mr Satan” handle.
In April of last year, the Federal Bureau of Investigation National Threat Operations Section was alerted to his posts, with authorities eventually determining that Monper was the person behind the “Mr Satan” account.
On April 9, 2025, the FBI, with the assistance of the Butler Township Police Department, arrested Monper and seized three handguns that he had purchased earlier that year.
Monper faced eight charges related to his actions, with each count carrying a sentence of five to 10 years in prison and/or a fine of no more than $250,000 if he was found guilty.
“I want to applaud the outstanding and courageous investigative work of the FBI and the Butler Township Police Department, who thankfully identified and apprehended this individual before he could carry out his threats against President Trump’s life and the lives of other innocent Americans,” said then U.S. Attorney General Pamela Bondi in a statement.
“Rest assured that whenever and wherever threats of assassination or mass violence occur, this Department of Justice will find, arrest, and prosecute the suspect to the fullest extent of the law and seek the maximum appropriate punishment.”
Butler is the same town where, while campaigning for president on July 13, 2024, 20-year-old Thomas Matthew Crooks attempted to assassinate Trump, piercing the upper part of Trump’s right ear before he was shot dead by a Secret Service counter-sniper.
