MSNBC reports:

A conservative filmmaker whose undercover videos shone a spotlight on alleged corruption by the liberal activist group ACORN was arrested with three other men and accused of plotting to wiretap the New Orleans offices of Sen. Mary Landrieu, D-La.

The FBI said in an affidavit that James O?Keefe was among the four men who were arrested Monday. Special Agent Steven Rayes said O?Keefe was helping two others, Joseph Basel and Robert Flanagan, who were dressed as employees of a telephone company and attempted to interfere with the office?s telephone system, The Times-Picayune of New Orleans reported Tuesday on its Web site.