SINGAPORE - When former S-League footballer Nur Alam Shah's unborn son was diagnosed with a rare heart defect in 2013, he vowed not to let him fall prey to the same condition that claimed his five-month-old daughter in 2008.

The 38-year-old was in the process of raising money so that his son Muhammad Royyan, now four, could undergo surgery when he died of a heart attack on Friday (May 18).