18 U.S.C. § 1118 - U.S. Code - Unannotated Title 18. Crimes and Criminal Procedure § 1118. Murder by a Federal prisoner

(a) Offense.--A person who, while confined in a Federal correctional institution under a sentence for a term of life imprisonment, commits the murder of another shall be punished by death or by life imprisonment.

(b) Definitions.--In this section--

“Federal correctional institution” means any Federal prison, Federal correctional facility, Federal community program center, or Federal halfway house.

“murder” means a first degree or second degree murder (as defined in section 1111).

“term of life imprisonment” means a sentence for the term of natural life, a sentence commuted to natural life, an indeterminate term of a minimum of at least fifteen years and a maximum of life, or an unexecuted sentence of death.