Koki Hirota was tried by the International Military Tribunal for the Far East (IMTFE) for war crimes, as a Class A war criminal.
He offered no defence.
Koki Hirota was found guilty under count 1 (waging wars of aggression and wars in violation of international law, between 1 January 1928 and 2 September 1945), count 27 (waging unprovoked war) and count 55 (having recklessly disregarded his duty to take adequate steps to secure the observance and prevent the breaches of the laws and customs of war).
He was sentenced to death and hanged at Sugamo Prison, on 23 December 1948.
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