Kota Tinggi district police chief Supt Rahmat Othman said the victim who was believed to have drowned, was found by passersby, fully clothed, at 10.35am.
The victim was identified as Khadijah Abu Bakar, 49, of Taman Sri Damansara, Kota Tinggi, he said in a statement here.
"The body was then taken to the Kota Tinggi Hospital and an autopsy found that the cause of death was drowning," he said.
"The identification was done based on the clothing, an anklet and a blue hair scarf worn by the victim," he said.
The investigation also revealed that the victim had a history of mental illness.
The case was classified as sudden death, said Rahmat.
