Washington (CNN) The FBI is warning the public about a nationwide scam involving perpetrators impersonating its agents, according to information released by the agency this month.

In targeting unsuspecting victims, the fraudulent caller uses technology to "spoof" the phone number from an actual FBI field office, so victims believe the inbound call is coming from federal law enforcement.

The agency indicated scammers have mimicked telephone numbers belonging to FBI field offices in California, Montana, Colorado, Texas, Wisconsin, Oklahoma, and Kentucky.

Once connected with a targeted victim, scammers indicate that a warrant of arrest exists for the person, which will be dismissed by a federal court in exchange for immediate payment. To increase the appearance of authenticity of the scam, perpetrators have conducted research on their victims including their names and information about their background.

In another variation of the scam, the agency said victims may also be told:

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