Sequestered Account

Think: a horse in a stall, a stable, fenced in.

See the "equest" in there? Latin for horse-related. So when an account is sequestered, it means that something went very, very wrong. Either the account was tagged as a money laundering vehicle, or the cash in it is identified as having come from Al Qaeda.

So the account is just frozen, trapped. No money in; no money out...until the FBI, NSA, and CIA investigators can snap on their rubber gloves and, you know, have a look. Turn. Head. Cough. Or. Else.