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Can the prosecutor’s office conduct investigations without the police?

The prosecutor''s office supervises criminal investigations but relies on the police for fieldwork, always acting in collaboration and following due process of law.

Written by

Victoria Harper

Editor-in-Chief

Updated on March 23, 2025
2 min read
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When addressing issues involving criminal investigations, it is important to understand the roles and limits of the different institutions responsible for public safety and law enforcement. This understanding helps clarify how cooperation between agencies occurs, which is also relevant for those dealing with immigration matters, such as cases involving the U visa.

In general, the prosecutor”s office – or the district attorney”s office – has as its main function the accusation and supervision of investigations, but does not act alone in conducting criminal investigations. Usually, it is the police or designated investigative agencies that carry out fieldwork, such as gathering evidence, taking statements, and investigations. The prosecutor”s office, in turn, has the authority to request, in a complementary manner, investigations and, if necessary, issue warrants, and can even conduct some more specific investigations within its scope of action. However, this usually occurs in collaboration with law enforcement agencies that have the resources and expertise for the investigation itself.

It is essential to emphasize that the dynamic between the prosecutor”s office and the police varies from case to case, but always observes the rules and principles of due process of law. If you are following a case or encounter any situation related to the U visa or criminal matters, it is important to comply with United States immigration laws and seek reliable information. Beware of offers or marketing campaigns that guarantee miraculous results, since the handling of criminal and immigration processes involves a thorough analysis of each case and the coordinated action of different government agencies.

Whenever possible, consult official sources and specialized professionals to obtain precise guidance and avoid misunderstandings or errors in interpreting the American legal system. This care is essential to correctly understand the role of each agent in criminal investigations and ensure compliance with immigration laws and the rights of all parties involved.

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Victoria Harper

Editor-in-Chief

Meet the author

Leading journalism and editorial content at Visto n’ Visa, Victoria helps make immigration topics clear, trustworthy, and easy to understand. Her focus is on delivering useful, human, and relevant content for people exploring new paths abroad.

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Can the prosecutor’s office conduct investigations without the police?

The prosecutor''s office supervises criminal investigations but relies on the police for fieldwork, always acting in collaboration and following due process of law.

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