Another woman has come forward to accuse San Diego Mayor Bob Filner of sexual harassment . Businesswoman Dianne York told CNN that Filner put his hands on her buttocks during a photo opportunity that followed a meeting three months ago . York said there were witnesses to what happened . She said both her advisers and Filner 's were in the room at the time . York is the 18th woman to accuse Filner of improper conduct . One woman said Filner gave her `` tush a pat . '' Another said he `` put me in what I guess now is the famous headlock '' and tried `` to kiss me on the lips and I 'd have to squirm to get away . '' Filner 's former communication director , Irene McCormack Jackson , quit her job and sued the mayor in July , saying he subjected women to `` crude and disgusting '' comments and inappropriate touching . Out of rehab , locked out of the office . Filner recently acknowledged inappropriate behavior , but has steadfastly resisted efforts to force him out of office . He has said publicly that his misconduct was not enough to force him out of office , and has insisted he will be vindicated by `` a full presentation of the facts . '' The city has changed the locks to the mayor 's office , and mediation talks that could effectively end his tenure in office are continuing , City Attorney Jan Goldsmith said Tuesday . Did mayor target victims of military sexual assault ? The talks come on the heels of Filner 's intensive two-week behavioral therapy , which was apparently aimed at ending his allegedly backward ways of treating women in the workplace . The mayor began the voluntary program July 29 , but his attorney , James Payne , said he was able to complete it August 10 , and he was expected to continue with outpatient treatment . Opinion : Will 'Mayor Naughty ' please step down ?
FIRST ON CNN : San Diego businesswoman becomes Mayor Bob Filner 's 18th accuser . Dianne York tells CNN that Filner touched buttocks during a photo opportunity three months ago .