18 U.S.C. § 1118 : US Code - Section 1118: Murder by a Federal prisoner

Search 18 U.S.C. § 1118 : US Code - Section 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.