On July 11, 2013, three of Filner's long-time supporters held a press conference to call for Filner's resignation as mayor, based on numerous unspecified but "credible" allegations that he had sexually harassed women. KPBS-FM said that it had been investigating reports of sexual harassment of female staff members for several months, and that the complaints included "inappropriate comments, kissing and groping". Later that day Filner issued a video statement apologizing and saying that he was seeking professional help to change his behavior. The next day Filner told reporters that he had treated women poorly and sometimes intimidated them, but insisted that a "fair and independent investigation" would clear him of sexual harassment charges.