Miyagi died in Sugamo Prison in Tokyo in the middle of his trial in 1943 .
By 1941 , all the members of Sorge 's spy ring had been rounded up , and they had all made confessions .
Miyagi died in Sugamo Prison in Tokyo in the middle of Sorge 's trial in 1943 .
By 1941 , all the members of Sorge 's spy ring had been rounded up , and they had all made confessions .