Morgan Wayne Siler, a 40-year-old inmate from Portsmouth, Virginia, has been sentenced to two concurrent life terms in prison. The sentencing was delivered by United States District Judge Scott H. Rash following Siler's guilty plea to charges of murder and conspiracy to murder on September 11, 2024.

The charges stem from an incident on December 18, 2015, at the United States Penitentiary in Tucson. Siler and fellow inmate David Hammer conspired and executed the murder of another inmate at the facility. The victim died from asphyxia and blunt force injuries.

At the time of this crime, Siler was already serving time for a 2008 conviction related to an assault on a Bureau of Prisons corrections officer and a series of robberies committed in Virginia in 2005. His new life sentences will be served consecutively to these prior sentences. David Hammer, his co-conspirator in the murder case, passed away in 2019.

The investigation into the murder was conducted by the Federal Bureau of Investigation. The prosecution was managed by the United States Attorney’s Office for the District of Arizona in Tucson.