A Taiwan military helicopter crashed in a mountainous area near the capital Taipei on Thursday, killing eight people on board.
The defence ministry said five people had survived the crash, while a rescue team was still combing the crash site in New Taipei City.
Chief of general staff, Air Force General Shen Yi-ming, was among the dead.
In a statement, the military said the reasons for the crash, in the wake of a forced landing, are still being investigated.
"We must find out the reason for the incident," President Tsai Ing-wen told reporters in the northeastern county of Yilan. "Most importantly, (we) must ensure the stability of our military and national defence."


British PM Starmer to send four Typhoon jets to Qatar
Bombing of Tehran intensifies as war enters day six
Azerbaijan vows to respond after four injured by Iranian drones
72 killed in Israeli attacks on Lebanon as it warns residents to leave south
Nepal goes to the polls; voters seek change after youth-led protests