A Bell 212 helicopter had crashed into the Maduru Oya reservoir in central Sri Lanka with a dozen armed forces personnel on board.

Six died after they were rescued and rushed to the hospital, Sri Lanka air force spokesman group captain Eranda Geeganage said.

“The helicopter was assigned to conduct a grappling exercise at a passing-out parade. Four special forces personnel and two air force gunmen died of their injuries,” Geeganage told Reuters.

He declined to give details on the possible reason for the crash.