St. Paul Mayor Randy Kelly has acknowledged that one of his staff members is under investigation by the FBI. Kelly says Hmong community liasion Sia Lo has been the target of a federal corruption probe for about 10 months. The mayor made the announcement today in response to a Star Tribune article that named Lo. The article includes an allegation made by an unnamed source that says Lo demanded a bribe from a businessman in exchange for help from the mayor's office. Lo told the paper the allegations were false. Kelly urged the media to give Lo a break.