It was more than likely the default email that goes out when a profile/account is suspended. UNA out of the box doesn't have a way for a staff member to add in a message to override suspend messages within the email. Would be nice to have, now that I'm mentioning it, but it sounds like all they did was suspend the profile/account and had the default email serve as the notice.

Could very well be wrong about that last part, but that's just my best guess.