The body of a Singaporean who fell into a river while kayaking in the Malaysian state of Perak was found yesterday.

Mr Koh Kah Wei, 30, was with a group of friends from Singapore last Saturday when his kayak hit driftwood and overturned, the Fire and Rescue Department said.

The department said yesterday that Mr Koh's body was found at 3.15pm with his shirt stuck between rocks in Sungai Tesong. The body was found about 1km from where he fell into the river, an officer told The Straits Times.

The body has been taken to a hospital in nearby Tapah town for a post-mortem.

The department received a distress call about the incident at about 4.50pm last Saturday.

Mr Nadzir Razak, the Fire and Rescue Department chief for the district of Bidor in Perak, told The Straits Times that Mr Koh's friends had tried to help him but he was swept away by the strong currents. "He lost control of the kayak and hit driftwood. The kayak overturned and the victim is believed to have become stuck between pieces of wood."

Mr Koh had been a volunteer trainer with the People's Association Water-Venture since 2010, where he helped with water sports.

Meanwhile, search and rescue teams in the state of Sarawak on the island of Borneo are looking for an Australian man who went missing in the jungles of the Mulu National Park, The Star reported.

The teams were combing several areas in an effort to find Mr Andrew Gaskell, 28, who went missing last Thursday after he embarked on a solo trek in the park.