Irawan, a Malaysian professional golfer, died in his China hotel room on April 14, according to PGATour.com. He was 28.
His death appears to be from natural causes, but a coroner's report has yet to be completed, the site reported.
Irawan was in Sanya to compete in the PGA Tour Series-China's Sanya Championship. According to the site, the golfer made his debut on the PGA Tour Series-China in 2016, after playing for the University of Tulsa golf team in the U.S. and turning pro in 2013.
He is survived by his wife, Marina, and his parents and sister.