DETROIT (AP) - Detroit Mayor Kwame Kilpatrick has pleaded not guilty to charges he lied under oath about an affair and his role in the firing of a top police official.  The mayor and former Chief of Staff Christine Beatty appeared for separate hearings Tuesday afternoon in a downtown courtroom.

Not guilty pleas were entered on their behalf on charges of perjury, conspiracy, obstruction of justice and misconduct in office.

Both were released on personal bonds, but would have to pay $75,000 if they break them.

Attorneys for both say their clients will be exonerated.  District Court Magistrate Steve Lockhart set June 9 as the date for their preliminary examinations.