What is the requirement for executing an arrest warrant in someone else's residence?

To execute an arrest warrant in someone else's residence, a search warrant is required if the individual being arrested is present in the home. This requirement stems from the Fourth Amendment, which protects against unreasonable searches and seizures. When law enforcement officers seek to enter a residence that does not belong to the person they are arresting, they must generally obtain a separate search warrant to ensure that they are respecting the rights of the occupants and adhering to legal standards.

If the individual is on the premises, the presence of that person provides probable cause for the arrest, but it does not eliminate the need for a search warrant to enter the residence if it is not their own. This ensures that the legal rights of third parties (those who live at the residence) are respected and that officers have judicial approval to conduct the entry into someone else's home.

The other options do not align with established legal standards: not requiring a search warrant could violate constitutional protections, informant testimony is not a prerequisite for the execution of an arrest warrant, and police acting solely on their judgment without the necessary warrants could lead to unlawful entries and violations of individuals' rights. Therefore, the requirement for a search warrant when the suspect is present in a third party’s home reinforces individuals' protections under the law.