Bangladesh, Nov. 9 -- When Singaporean police stormed a string of luxury residences across the city-state on August 15, 2023, few could have predicted just how far the ripples would spread. The raids-part of what would become Singapores largest-ever money laundering investigation-uncovered billions of dollars in mysterious wealth linked to cyber scams, illegal gambling networks, and opaque offshore structures. Yet as investigators pieced together the complex web of transactions, another chapter of the saga was quietly unfolding thousands of kilometers away in London.

Two men associated with the Singapore probe-Su Binghai and Xu Haika-spent more than £40 million ($51 million) buying up prime London real estate during the same months ...