Representative George Santos, the New York Republican who has been the target of numerous investigations into his personal and campaign finances since his biography was found to be a web of lies and exaggerations, has been charged by federal prosecutors in New York, two people familiar with the investigation said.

The charges come after months of investigation by the Eastern District of the U.S. attorney’s office, which has been conducting one of the inquiries into Mr. Santos’s financial and campaign activities.

The specific charges against Mr. Santos, 34, are not yet clear. Mr. Santos could appear as soon as Wednesday in federal court, according to CNN, which first reported the charges.

Mr. Santos has been subject to intense scrutiny in the wake of reporting published by The New York Times last year that found he had lied about his biography, education and work history to voters and that raised questions about his personal wealth and campaign finances.