Kevin Halligen, 50, told Kate and Gerry McCann he could find their daughter but allegedly spent the cash on a lifestyle of first-class flights, chauffeured cars, nightclubs and luxury hotels and goods.
In a separate alleged scam he was arrested last November at the £700-a-night Old Bank Hotel in Oxford.
US authorities issued an extradition warrant accusing Halligen of defrauding a law firm of £1.3 million by claiming he could help free two men jailed in war-torn Africa. It is claimed he instead spent the money on a mansion.
