Secretaries general of the four biggest opposition parties agreed Tuesday to demand the resignation of Defense Agency chief Gen Nakatani over his agency's systematic compilation of information on individuals who made information disclosure requests from the agency.
The opposition camp says Nakatani should step down since the agency initially lied to the public by declaring that the information was gathered by one official acting at his own initiative.
The Democratic Party of Japan, the Liberal Party, the Social Democratic Party and the Japanese Communist Party have indicated they will boycott Diet deliberations if the ruling bloc refuses to convene a special Diet session on the issue.