Scam undone by...
CCTV-ing his family 24x7; monitoring all their emails, data usage, phone calls, financial transactions, location of every device; eavesdropping on all conversations; bugging his home; hacking into his bank, social media, every account he ever opened; doing the same to all his friends, relatives, colleagues, acquaintances, people living in the same country as him.
Still that's ok; he might've been an unamerican terrorist.