What is one requirement for arrest warrants?

The requirement for arrest warrants includes establishing probable cause that a crime has been committed. This is foundational in the legal system, as it ensures that law enforcement has a legitimate reason to arrest an individual. Probable cause means there are reasonable grounds based on facts, circumstances, or evidence to believe that a person has committed a crime. This protects citizens from arbitrary arrests and upholds the Fourth Amendment of the U.S. Constitution, which guards against unreasonable searches and seizures.

The other options do not meet the legal standard for what is required to issue an arrest warrant. While a suspect's address might assist in the execution of the warrant, it is not required for the warrant's validity. Mentioning the suspect's past crimes could be relevant context but does not constitute a basis for the warrant itself. Lastly, having a witness to the crime may support probable cause, but the direct requirement is the existence of probable cause itself rather than the presence of a witness.