I can't really speak to that. I know that the banks do have monitoring systems in place to detect potential money laundering. There are various rules that are applied, so it is possible that suspicious activity could have been detected. It may or may not have been legitimate. It varies, but I do know that if there is a hit, banks—at least our bank—investigate it. They'll pursue it on a case-by-case basis, hopefully to a proper resolution.
On November 23rd, 2016. See this statement in context.