The key was lost and the safe remained locked for 22 years after the 1989 death of its owner, former Lt. Gen. Teiichi Suzuki of the Imperial Japanese Army, who had been the last surviving Class-A war criminal of World War II.
Suzuki, who died at the age of 100 in Shibayama, Chiba Prefecture, was among key Cabinet members when Japan started the Pacific War with the Dec. 7, 1941, surprise attack on Pearl Harbor.
Two years ago, Suzuki's relatives had NHK open the safe. Inside were diaries, notebooks and other documents, including a 16-page typed manuscript that the general had read out in front of Emperor Hirohito and national leaders at an Imperial Conference on Nov. 5, 1941, to detail Japan's logistical strengths.