Mindy McCready has now been questioned by the FBI in its perjury investigation involving baseball star Roger Clemens, according to the New York Daily News, which has been closely following the case. According to the newspaper, two FBI agents interviewed McCready in an effort to determine whether Clemens lied when he told congressional investigators he had never taken performance-enhancing drugs. Clemens denies having used steroids and human growth hormone. McCready has not refuted reports that she and Clemens were involved in a relationship that began in 1991. McCready will perform Thursday (June 5) during a noon concert on the opening day of the CMA Music Festival in Nashville.