HARRISBURG — This is an official press release from the U.S. Department of Justice (USAO - Pennsylvania, Middle), published as received.

HARRISBURG - The United States Attorney’s Office for the Middle District of Pennsylvania announced today that Roy Ladell Weaver, age 41, of Jonestown, PA, and Pro Diesel Werks, LLC, were indicted yesterday by a federal grand jury for conspiracy to impede the lawful functions of the Environmental Protection Agency (EPA) and to violate the Clean Air Act, and individual violations of the Clean Air Act.

According to Acting United States Attorney John C. Gurganus, the indictment alleges between 2013 and March 12, 2024, Weaver, owner of Pro Diesel Werks, LLC, doing business as Pro Diesel Werks, and Pro Diesel Werks, along with multiple co-conspirators, disabled the hardware emissions control systems on the diesel vehicles of Pro Diesel Werks customers (a practice referred to as a “delete” or “deleting”), defeating the systems’ ability to reduce pollutant gases and particulate matter being emitted to the atmosphere. It is further alleged that Weaver, Pro Diesel Werks, and their co-conspirators also tampered with the emissions diagnostic systems on the vehicles to prevent the diagnostic system software from monitoring the emission control system hardware deletes (a practice referred to as a ‘tune” or “tuning). 

The case was investigated by the EPA’s Criminal Investigations Division. Assistant U.S. Attorney David C. Williams, Special Assistant United States Attorney Patricia C. Miller, and Environmental Crimes Section Trial Attorney Ronald A. Sarachan are prosecuting the case.

The maximum total penalty under federal law for these offenses is nine years of imprisonment, a term of supervised release following imprisonment, and a fine. A sentence following a finding of guilt is imposed by the Judge after consideration of the applicable federal sentencing statutes and the Federal Sentencing Guidelines.

Indictments and Criminal Informations are only allegations. All persons charged are presumed to be innocent unless and until found guilty in court.

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