calling trying to get information and like what's going on here. why are thing stalling? >> reporter: now the investigation has found that for 421 days, a year and two months, the fbi, olympic committee and gymnastics failed to act or even warn michigan university that he was sexually abusing athletes. >> there are profiles in cowardice because people put the other way. they put medals above people. >> reporter: the organization knowingly concealed reports. >> was this massive cover up at all levels of uag, usoc and even the fbi? >> there wit was a criminal covr up, remains to be proved but it was a cover up in spirit. >> reporter: in april of 2018,