TOKYO 芒鈧珺次元官网网址� Japanese authorities confirmed Monday that all nine people aboard a rescue helicopter that crashed in snow-covered mountains in central Japan have been pronounced dead.

The Fire and Disaster Management Agency said in a statement that the nine men 芒鈧珺次元官网网址� seven firefighters, an engineer and the pilot 芒鈧珺次元官网网址� were aboard a rescue helicopter that crashed during a training flight Sunday.

The helicopter, belonging to Nagano prefecture's rescue unit, crashed on the side of Mount Hachibuse, about 250 kilometres (150 miles) northwest of Tokyo. TV footage showed the mangled aircraft buried in deep snow, sitting belly-up with its broken pieces scattered around.

The cause of the crash was under investigation.

Japanese public broadcaster NHK said the helicopter is a 15-seat Bell 420EP made by Bell Helicopter, based in Fort Worth, Texas.

The Associated Press