San Diego mayor sued for sexual harassment July 22, 2013 -- Updated 2040 GMT (0440 HKT) NEW: Filner is unfit "to hold any public office," former spokeswoman says NEW: San Diego mayor should quit, her lawyer says Mayor Bob Filner now faces a sexual harassment lawsuit Filner says he did "something wrong" but denies harassment allegations (CNN) -- San Diego Mayor Bob Filner's former spokeswoman sued him for sexual harassment Monday, calling Filner unfit "to hold any public office" and adding a new dimension to the scandal he faces. Irene McCormack Jackson said she and other women were subjected to "crude and disgusting" comments and inappropriate touching by Filner. She said she resigned as Filner's communications director in June after deciding that the mayor would not change his behavior. "I had to work and do my job in an atmosphere where women were viewed by Mayor Filner as sexual objects or stupid idiots," Jackson said. She said Filner asked her to work without underwear and made repeated sexual advances toward her. He is not fit to be mayor of our great city. He is not fit to hold any public office. A man who lacks character makes a mockery of his ideas," she said. Filner has been battling allegations of sexual harassment for several weeks, but none of the women leveling those claims had come forward before Jackson filed suit in a state court Monday. Her lawyer, Gloria Allred, called on Filner to resign, telling reporters, "Apologies alone will not take care of this injustice." There was no immediate response from Filner, who has denied the harassment allegations against him. He said last week that he believes he will be vindicated by "a full presentation of the facts." But he has also acknowledged, "I need help," and added, "I'm clearly doing something wrong." "I am embarrassed to admit that I have failed to fully respect the women who work for me and with me, and that at times I have intimidated them," Filner said in a statement earlier this month. Former city councilwoman Donna Frye -- a Democrat, like Filner -- and two attorneys who say they represent accusers had leveled allegations against the mayor before Monday. One of the attorneys, Marco Gonzalez, who represents an unidentified accuser, said last week that he intends to file a sexual harassment claim with the city and may also file civil lawsuits against San Diego. Jackson said her decision to resign was clinched after Filner's deputy chief of staff resigned in June. Filner "refused to listen to someone he had known for 35 years, and who told him explicitly, during a senior staff meeting, that his behavior with women was terrible and possibly illegal. Filner "laughed it off," she said. She said Filner challenged her to provide one example of improper behavior; when she brought up his comments about wearing underwear, "He had no comeback," she said. The San Diego Sheriff's Department has established a hotline for accusers, who are allowed to remain anonymous under California law. Since the phone number was announced Friday, the department has received calls, spokeswoman Jan Caldwell told CNN Monday. No further details were given. CNN's Chuck Johnston and Greg Botelho contributed to this report.