Another woman has come forward accusing San Diego Mayor Bob Filner (D) of sexual harassment -- the 18th to do so.

Businesswoman Dianne York says Filner put his hands on her buttocks during a photo opportunity earlier this year, according to CNN.

York says there were several witnesses to the incident.

Filner recently undertook behavioral therapy and is reportedly in talks to reach some kind of settlement in a sexual harassment lawsuit filed by his former communications director.

The Democratic National Committee will vote this week on a resolution that calls on Filner to resign and, failing that, the resolution would support efforts to recall the mayor from office.