FCI Allenwood Inmate Charged With Possessing Weapon, Assaulting Other Inmate

WILLIAMSPORT- The United States Attorney’s office for the Middle District of Pennsylvania announced that Mark Villareal, 44, an inmate in FCI Allenwood, was indicted on June 11, 2026, by a federal grand jury for possessing a weapon in prison and assault resulting in serious bodily injury.

According to United States Attorney Brian D. Miller, the indictment charges Villareal with one count of possessing contraband in prison, and one count of assault resulting in serious bodily injury.  Villareal was allegedly in possession of an inmate-manufactured knife which he allegedly used to assault another inmate.  

The Federal Bureau of Prisons and the Federal Bureau of Investigation investigated the case.  Assistant U.S. Attorney Robin Zenzinger is prosecuting the case.

The maximum penalty under federal law for these offenses is 10 years’ imprisonment and a fine. A sentence following the finding of guilt is imposed by the Judge after consideration of the applicable federal sentencing statutes and the Federal Sentencing Guidelines.

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

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