[Code of Federal Regulations] [Title 28, Volume 1] [Revised as of July 1, 2006] From the U.S. Government Printing Office via GPO Access [CITE: 28CFR28.21] [Page 457] TITLE 28--JUDICIAL ADMINISTRATION CHAPTER I--DEPARTMENT OF JUSTICE PART 28_DNA IDENTIFICATION SYSTEM--Table of Contents Subpart C_Preservation of Biological Evidence Sec. 28.21 Purpose. Source: Order No. 2762-2005, 70 FR 21957, Apr. 28, 2005, unless otherwise noted. Section 3600A of title 18 of the United States Code (``section 3600A'') requires the Government to preserve biological evidence that was secured in the investigation or prosecution of a Federal offense, if a defendant is under a sentence of imprisonment for such offense, subject to certain limitations and exceptions. The general purpose of this requirement is to preserve biological evidence for possible DNA testing under 18 U.S.C. 3600. Subsection (e) of section 3600A requires the Attorney General to promulgate regulations to implement and enforce section 3600A, including appropriate disciplinary sanctions to ensure that employees comply with such regulations.