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Mark Villareal, Assault, Pennsylvania 2026

⏱ 2 min read

Mark Villareal, a 44-year-old inmate at FCI Allenwood in Pennsylvania, has been charged with possessing a homemade knife and using it to assault another inmate. The incident occurred at the federal correctional institution, where Villareal is currently serving time. The FBI and Federal Bureau of Prisons investigated the case, which led to an indictment on June 11, 2026. Villareal faces serious charges, including possessing contraband in prison and assault resulting in serious bodily injury.

The indictment alleges that Villareal used the inmate-manufactured knife to carry out the assault, putting the victim in serious harm’s way. The maximum penalty for these offenses is 10 years’ imprisonment and a fine. The case is being prosecuted by Assistant U.S. Attorney Robin Zenzinger.

The investigation was a collaborative effort between the Federal Bureau of Prisons and the FBI, highlighting the commitment to maintaining safety and order within the prison system. The charges against Villareal serve as a reminder of the serious consequences of violent behavior behind bars.

Villareal’s case will now move forward, with a sentence to be imposed by the Judge after consideration of the applicable federal sentencing statutes and the Federal Sentencing Guidelines. The outcome will depend on various factors, including the severity of the assault and Villareal’s prior record.

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