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."


Fire in India’s Goa state kills at least 25
India caps airline fares as IndiGo crisis leaves hundreds stranded for fifth day
Pakistan, Afghanistan border clashes kill 5, officials say
Gaza talks at critical moment, ceasefire not complete, Qatar's PM says
Indonesians climb over logs in walk to aid centre as flood deaths rise over 900
