In the United States, an arrest warrant is issued by the courts or by Houses of Congress or other legislatures (Arrest, 2006). An arrest warrant must be supported by a signed and sworn affidavit showing probable causes that: -a specific crime has been committed, and
-the person(s) named in the warrant committed said crime.
In most jurisdictions, arrest warrants are a necessity for misdemeanors not occurring in the presence of the police officer. As long as police have the necessary probable cause, they do not need an arrest warrant to arrest someone suspected of committing a felony.
In this case, the police would not need an arrest warrant for the person who committed the armed assault because it is a felony (Arrest, 2006; Hendrie, 2003). One definition of "probable cause" is "what would lead a person of reasonable caution to believe that something connected with the crime is on the premises of a person or on the persons themselves" (Probable Cause, 2006; Probable, 2004
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