A Secret Service supervisor was placed on leave and had his security clearance suspended after a female co-worker accused him of making unwanted sexual advances at the agency's headquarters, the Secret Service said Wednesday. The female accused Xavier Morales, a manager in the security clearance division, of grabbing her and trying to kiss her on March 31 after hours, according to two police officials with knowledge of the case. An agency spokesman said Morales declined to comment. The agency put his name on an internal "do not admit" list and took away his gun and badge while investigators launched a preliminary review of the complaint. This is the second case of staff misconduct at the Secret Service in a month.