A Texas Affidavit for Search Warrant: DNA Sample is a legal document used by Texas law enforcement officials that provides a sworn statement from a law enforcement officer that is necessary for obtaining a search warrant to collect a DNA sample from a person. This document allows the law enforcement officer to cite the facts, circumstances, and information needed to show probable cause that a crime has been committed and that the person in question is the perpetrator. It is typically used when the law enforcement officer is attempting to identify a suspect in a criminal investigation. There are three types of Texas Affidavit for Search Warrant: DNA Sample: Probable Cause Affidavit, Search Warrant Affidavit, and DNA Search Warrant Affidavit. The Probable Cause Affidavit outlines why the law enforcement officer believes there is probable cause to search and seize the DNA sample. The Search Warrant Affidavit outlines the specific facts, circumstances, and information that led the law enforcement officer to request a search warrant. The DNA Search Warrant Affidavit provides the legal basis for the search warrant and outlines why the law enforcement officer believes a DNA sample should be collected.