In a statement, the civil aviation regulator said that all five on board, including the pilot, survived. They were rescued by marine police.

“They are being transferred to Sultanah Aminah Hospital in Johor Bahru for a medical examination and treatment,” it said.

The helicopter departed from the Tanjung Kupang police station at 9.51am.

Other details including the time and cause of the accident were not provided.

Inspector-General of Police Khalid Ismail said the AS355N aircraft was taking part in a regional security training exercise when the crash happened at about 10.25am.

“The helicopter was participating in a multi-agency simulation exercise held in conjunction with the Malaysia-Indonesia-Thailand-Singapore Nuclear Security Detection Exercise 2025,” he said in a statement.

He also said a thorough probe will be conducted by the Air Accident Investigation Bureau under the transport ministry.