Keenan Returning to Duty in Tokyo Will Resume Position As Prosecutor at War Trials The International Prosecution Section said that its chief, Joseph B. Keenan, has notified section officers that he expects to leave Washington today, en route to Tokyo to resume his duties in the prosecution of leading Japanese being tried as war criminals. The section said that Mr. Keenan would go first to the West Coast and that he would fly from there to Tokyo. Mr. Keenan went to the United States for conferences in Washington, following which he went to Saratoga Spring, N. Y., for a rest.