Oklahoma man faces federal charges for mailing hundreds of threatening letters
Robin Patrick Martin, 67, of Oklahoma City, is facing federal charges after authorities allege he sent hundreds of letters containing suspicious white powder to election officials, members of Congress, and media organizations. According to a Department of Justice press release, the mailings were part of a calculated attempt to terrorize public servants during the 2024 and 2026 election cycles. Martin was arrested early Monday morning following an FBI operation, according to FBI Director Kash Patel.
The investigation into these mailings has been ongoing for some time. While the white powder contained in the envelopes was eventually determined to be non-hazardous, the impact on the recipients was immediate. Officials were forced to handle the mail without knowing if the substance could sicken or kill them. The Department of Justice reports that the letters went to well over 100 different locations, including multiple state secretary offices and election offices across the country.
Martin faces two primary counts: conveying false or misleading information and hoaxes, and mailing threatening communications. On Tuesday, charging documents were unsealed detailing the scope of the alleged campaign. As reported by CBS News, the total number of envelopes sent may exceed 700. These envelopes allegedly contained messages written in UV-reactive ink that was not visible to the naked eye.
The scope of the alleged intimidation campaign
Federal investigators have linked the recent letters to a pattern of behavior that began during the 2024 election cycle. An FBI affidavit indicates that Martin’s writings frequently referenced perceived issues with the 2020 election and expressed concerns regarding the integrity of subsequent elections. In one instance, an envelope sent to the Oklahoma State Election Board prior to the 2024 election reportedly contained the message: “stay on the right side of history your life might depend on it!”
The investigation also uncovered specific threats and organizational references. According to the affidavit cited by CBS News, Martin allegedly referenced an organization called the United States Traitor Elimination Army, threatening recipients with arrest for treason “OR WORSE!!”
Law enforcement was able to build a case through a combination of surveillance and forensic analysis. Investigators allegedly reviewed surveillance footage showing Martin dropping off envelopes at a USPS facility during both the 2024 and 2026 periods. Additionally, records analyzed by federal law enforcement reportedly show that Martin purchased items used for the mailings, as well as the specific ingredients required to create the invisible ink, in August of this year.
The complexity of the investigation involved several layers of government, including:
- The Federal Bureau of Investigation (FBI)
- The United States Postal Inspection Service (USPIS)
- The U.S. Capitol Police
- The Oklahoma City Police Department
- The Texas Department of Public Safety, including the Texas Rangers
Federal response to election-related threats
This case is being handled as part of a broader federal initiative known as the National Security Presidential Memorandum 7. This White House-directed, interagency effort aims to protect First Amendment rights while specifically targeting individuals and organizations involved in political violence. Officials have emphasized that the disruption caused by these letters extends beyond the immediate fear they instilled.
“The mailing of letters containing an unknown powdery substance across the country created unnecessary fear, diverted resources, and attempted to disrupt our nation’s democratic process,” said Special Agent in Charge Doug Goodwater of the FBI Oklahoma City Field Office.
The logistical strain on law enforcement and postal services was significant. The U.S. Postal Inspection Service (USPIS) worked to identify and recover many of the mailings before they could reach their intended targets. Chief Postal Inspector Gary Barksdale noted that the agency’s expertise in mail flow allowed them to safeguard the integrity of the election process and protect the American public.

While the powder was found to be non-toxic, the psychological and economic costs of the investigation remain a point of focus for federal authorities. The investigation required coordinated efforts between the FBI Laboratory Division, the U.S. Attorney’s Office, and various state-level law enforcement agencies to verify the contents and trace the origin of the correspondence.
Martin appeared before U.S. Magistrate Judge Shon Erwin in Oklahoma City for his initial appearance. He has been ordered to be detained pending his next court date. A preliminary hearing is scheduled for November 9, 2026. As with all federal criminal cases, Martin is presumed innocent until proven guilty beyond a reasonable doubt in a court of law.
The full details of the allegations and the evidence gathered by the FBI can be found in the FBI affidavit and the official Department of Justice filings.