Oscar-winning actress Nicole Kidman's father Antony Kidman died here today and police said they were investigating the "unnatural death".
Antony, a renowned clinical psychologist, is believed to have collapsed at the Tanglin Club, where he was staying.
He was here to pay a visit to Nicole's sister Antonia Kidman and was staying at the club as his son-in-law is a member there.
"Police were informed today at about 0954 hours [local time] that a man in his 80s was pronounced dead at Tan Tock Seng Hospital," a Singapore police spokesman said.
"Police are investigating the unnatural death," he was quoted by the Straits Times as saying.
Antony had worked with the University of Technology's Health Psychology Unit at Royal North Shore Hospital in Sydney.
Antony, who was close to both his daughters, was a clinical psychologist at Royal North Shore Hospital and a director of health psychology at the University of Technology Sydney.
Antony was the Director of the UTS Health Psychology Unit at Sydney's Royal North Shore Hospital.
He also ran community service seminars on aspects of mental health, was a regular speaker on radio and television and wrote for academic journals and the general public.
He was awarded an Order of Australia in 2005 for his contributions to clinical psychology.
In June this year, Nicole walked the red carpet with her father and husband Keith Urban at the Swisse Celebrate Life Ball in Melbourne.
No official statement from his family has been released yet.
