>> is your source michael avenatti's source? >> i can't speak to the exact chain of command of who had these documents at one point other than to say this is the source who originally made them public. >> this source says he or she became alarmed when they noticed the suspicious activity reports gone. how do they know that they're gone from the system and not moved somehow? >> let's be careful about the term gone. you're right. one of the things we talk about at length in this story is all the possible explanations including many that could be more benign than what this whistle-blower feared. it is possible prosecutors we talked to and people we talked to said, for instance, the southern district of new york or special counsel mueller said quarantine these, restrict them in some way. what i highlight, alisyn, is every expert we talk to said that almost never happens. they don't have a procedure for