Freitag, 16. Juni 1950
Ryuichi Tsukamoto (born June 16, 1950) is the alias of a Japanese serial killer who, as a teenager, killed three women in three separate prefectures between 1966 and 1967. Dubbed by investigators "Metropolitan Designated Case No. 106", Tsukamoto was convicted and sentenced to life imprisonment in 1972, but his current status is unclear.