Kakuei Tanaka was arrested in connection with the Lockheed bribery scandals in 1976 .
Kakuei Tanaka was found guilty by a lower court in 1983 , placing pressure on his political strength .
Kakuei Tanaka was arrested in connection with the Lockheed bribery scandals in 1976 and found guilty by a lower court in 1983 , placing pressure on his political strength .