Mayor Vincent C. Gray (D) has retained lawyer Robert S. Bennett, who represented President Bill Clinton in the Monica Lewinsky affair, while former mayoral candidate and recently fired employee Sulaimon Brown said he was meeting with the FBI Wednesday.

Gray’s retention of an attorney and Brown’s visit to the FBI heightened Brown’s <a href=””>allegations</a> that Gray promised him a job in exchange for attacking then-Mayor Adrian M. Fenty (D) on the campaign trail. Brown also alleges that Lorraine Green, Gray’s confidante, and Howard Brooks, Gray’s campaign consultant, gave him a series of payments over the summer to keep his campaign afloat.

Brown, a 40-year-old unemployed auditor, was hired as a $110,000 special assistant in the Department of Health Care Finance at the end of January. But he was fired Feb. 24 after media reports of his past legal troubles, including a 2007 restraining order.

Brown told The Washington Post of the allegations. Since the Post published a story on Sunday, Green’s confirmation hearing to be Gray’s pick to head the Washington Convention and Sports Authority has been put on hold indefinitely. Brooks’ son, hired as a $110,000 special assistant in the economic development department, is resigning, according to a government source.

Late Wednesday afternoon, Gray called Bennett and asked him to be his personal counsel. In 2009, Gray tapped Bennett to head an independent probe into Council member Marion Barry’s personal contracts. Bennett and lawyer Jonice Gray Tucker, Gray’s daughter, worked previously at the same law firm.