User blog comment:SATOSHISUMI/Grand Magic Games Arc Theories/@comment-72.181.81.32-20140107021718/@comment-7418318-20140107095202

That was already revealed during the Fantasia parade when Gajeel gave Makarov a note with Raven Tail's location and outright told Makarov that Ivan was still clueless and Makarov apologizing for giving such a dangerous misison.