The full autopsy report on William Yau Zhen Zhong, six, who was found dead six days after being reported missing on Jan 16, is expected to be ready by Tuesday.

Selangor CID chief SAC Mohd Adnan Abdullah said police had classified the case as sudden death pending the report as well as the DNA results, which would only be known after 72 working hours.

"We will inform on any updates," he told reporters at the police state contingent headquarters media centre here Sunday.

William, the second child of Goh Ying Ying, 28, and Yau Kok Kang, 32, went missing at Jalan Putra Mahkota, Putra Heights in Subang Jaya around 8.30pm last Wednesday after getting out of the family car to look for his parents who had gone to an electrical shop.

His body was spotted by villagers at Port Klang on Jan 24 at 6.30pm.

On Jan 25, William's parents identified his remains at the Tengku Ampuan Rahimah hospital mortuary through two scars at the back of his head and one on his forehead.