RALEIGH, N.C. — Former Duke lacrosse rape prosecutor Mike Nifong has been slapped with additional ethics charges by the state bar association, which has accused him of withholding DNA evidence and making misleading statements to the court. The new charges by the North Carolina State Bar against Durham County District Attorney Mike Nifong were announced Wednesday and could lead to his removal from the state bar, according to a copy of the updated complaint. Nifong last year indicted three men from the Duke lacrosse team on charges that they raped a stripper at an off-campus party in March of 2006.