Four people were rescued after a Malaysian coast guard helicopter crashed in the Strait of Malacca on Tuesday, the aviation regulator said.
The helicopter was on a training flight when it plunged into water near Angsa island, the Civil Aviation Authority of Malaysia said without giving a cause.
"A total of four persons including pilots were onboard and there were no fatalities reported. All survivors were rescued by a rescue helicopter," it said.
Angsa is a rocky island in the Strait of Malacca, a narrow shipping lane which runs between the Indonesian island of Sumatra and Malaysia.
The coast guard in a separate statement said it will launch an investigation into the cause of the crash.