Federal Grand Jury Indicts Suspect for Mailing Bomb Threat to Cincinnati Courthouse

Robert Mayberry faces federal charges for allegedly mailing bomb threats to the Potter Stewart U.S. Courthouse in Cincinnati in late 2025.

By: AXL Media

Published: Mar 13, 2026, 8:58 AM EDT

Source: Information for this report was sourced from FOX19

Federal Indictment for Targeted Courthouse Threat

A federal grand jury returned an indictment on Thursday against Robert Mayberry, charging him with "Transmission of Bomb Threat." The legal action stems from a series of communications sent between September 9 and September 15, 2025. Federal prosecutors allege that Mayberry used the United States Postal Service to convey a threat to damage or destroy the Potter Stewart U.S. Courthouse, located on East Fifth Street in Cincinnati, through the use of an explosive device or fire.

Statutory Penalties for Threat Transmission

The charge of transmitting a bomb threat is treated with significant severity under federal law. According to the Department of Justice, a conviction on this specific count typically carries a maximum penalty of 10 years in federal prison. Furthermore, defendants found guilty of such offenses can face substantial financial penalties, including fines totaling up to $250,000. These sentencing guidelines reflect the high priority federal authorities place on protecting judicial infrastructure and personnel.

Investigative Status and Suspect Custody

Details regarding Mayberry’s background, including his age, residence, and current custody status, have not yet been fully disclosed by federal officials. Early reports indicate it is currently unclear whether Mayberry has been taken into physical custody or where he might be held pending trial. Federal authorities have not released information regarding a possible motive or the specific contents of the mailed communications beyond the general threat of destruction.