Not sure if all grounds are covered by the investigators. Even the parent need to be investigated, the state of Singapore OWE it to the kids. If it was 4D related, whether legal or illegal (most likely in 1979) 4D, then some party must have paid the parent. If legal payout, then it is so simple. If illegal, the 4D ring boss would have knew about such a huge payout. Investigators just need to trace the finances of the parent for the following few to 10 years to see if the 4D story is valid. Follow the money, u will most certainly solve the case.
Moral of the story: Never buy lottery for people, or ask people to help buy lottery.
U forget to buy, then tio big, u die.
U bought and tio big, but keep money, u also die
U bought and tio big and want to keep money, u want yr fren die.
So next time, think twice b4 u agree to do people to buy 4D for them. Btw father and son included
Thank you, SG pool for having so many outlets!