Who is contacted in cases of identity crime involving custody arrests of individuals?

In cases of identity crime involving custody arrests of individuals, the U.S. Secret Service is the appropriate agency to contact. This is because the Secret Service is responsible for protecting the nation's financial infrastructure and payment systems, which includes investigating financial crimes such as identity theft and credit card fraud. They have the specialized training and resources needed to handle the complexities of identity crime, including those crimes that may also be tied to larger fraud schemes.

The Federal Trade Commission primarily focuses on consumer protection and fair trade practices but is not directly involved in the investigation of criminal identity theft arising from custody arrests. The Department of Justice handles legal prosecution and policy issues, but again, is not the first contact for law enforcement matters relating to identity crimes. The U.S. Marshals focus on apprehending fugitives and managing prisoner transport and security, rather than investigating financial crimes. Therefore, the U.S. Secret Service is the optimal agency to address identity crime issues that arise in the context of custody arrests.