The top prosecutor in a northwestern New Jersey county has resigned amid a state probe into allegations that the office lied about caseloads to pad its budget with state money meant for fraud investigations.

James Pfeiffer, who had been the Warren County prosecutor since 2019, resigned Friday “effective immediately,” state Attorney General Matthew Platkin said. Anthony Picione, deputy director of the Office of Public Integrity and Accountability in the state’s Division of Criminal Justice, was appointed as acting county prosecutor, Platkin said.