Maybe no password. If he didn't have the sense to have it distributed through multiple offline wallets with some kind of auto-drain for at least some of them...
Feds don't seem to be doing that either.
Didn't the feds capture him in a library while he was using his laptop? If they got the laptop while it was on, they could easily copy the wallet files. As for the password, maybe he had it stored in a txt file somewhere on his laptop?
if that is the case, then he's really really stupid for not using cold wallet storage.. or hiding it somewhere in the event of him being caught. can't believe such a reckless guy would maintain SR. you don't even need to be smart to realize that all your shit will be taken when caught.