A 66-year-old New Castle man is facing a federal firearms charge following an FBI investigation into social media posts allegedly threatening Supreme Court justices, immigration enforcement officers and other federal officials.
Gregory Wierzbicki was charged on October 14, 2026, with possession of a firearm by a prohibited person. According to federal court documents, investigators identified numerous posts on Bluesky and Substack in which Wierzbicki allegedly encouraged violence against government officials and urged others to organize an armed militia.
According to an FBI affidavit, Wierzbicki posted a message on June 28, 2026, expressing a desire to surveil Supreme Court justices, learn their travel routes and give them a “little scare.” Other posts referenced violence against Immigration and Customs Enforcement officers and discussed forming an armed militia to confront the federal government.
Investigators also documented messages in which Wierzbicki allegedly discussed possessing firearms and ammunition. In an August 2025 private message, he claimed to own two semiautomatic .22-caliber firearms and a shotgun. Another message referenced having ammunition and preparing for a possible armed confrontation.
Court records show Wierzbicki was previously convicted of third-degree burglary in Delaware following an August 2005 arrest. He was sentenced in April 2006. That felony conviction prohibits him from legally possessing firearms under federal law.
On October 14, FBI agents executed a search warrant at his residence in the 100 block of East 3rd Street in Historic New Castle. Investigators recovered a JC Higgins 12-gauge shotgun, a Marlin Model 60 .22-caliber rifle and a Remington Sport Master .22-caliber bolt-action rifle.
According to the criminal complaint, Wierzbicki acknowledged during an interview with investigators that he was a convicted felon and possessed the three firearms recovered from his home.
Wierzbicki appeared before U.S. Magistrate Judge Christopher J. Burke on October 14 and was ordered temporarily detained pending a detention hearing scheduled for Monday, October 19. If convicted, he faces up to 15 years in federal prison.
U.S. Attorney Benjamin L. Wallace said federal authorities would act to protect public officials, including judges and law enforcement officers, from threats of violence.
The investigation involves the FBI Baltimore Field Office’s Joint Terrorism Task Force, the Supreme Court Police Protective Intelligence Unit and Homeland Security Investigations.
The case is being prosecuted by Assistant U.S. Attorney Kevin P. Pierce and is part of a nationwide federal initiative targeting political violence.
Wierzbicki has been charged with unlawful firearm possession, not a separate offense involving threats or terrorism. The allegations contained in the criminal complaint have not been proven in court, and he is presumed innocent unless proven guilty.