we need to asked the police to freeze his Bank account as soon as possiable.
yes because police just arrest people off the street and freeze their bank accounts when someone from the public asks them to... *sarcasm*
This is why many places won't let Americans use their financial services...
American Investor -> Mail & Wire Fraud Act -> FBI -> Interpol -> Arrested -> Extradited to USA.
http://en.wikipedia.org/wiki/Mail_fraud