Prosecutors are demanding a two-year prison term for a civilian employee of the U.S. Air Force in Okinawa who was indicted over a fatal traffic accident in January 2011 under a new bilateral accord for handling crimes involving nonmilitary personnel at U.S. bases.

The victim, Koki Yogi, was "not at fault" and his mother is demanding severe punishment for Rufus James Ramsey III, prosecutors said Wednesday in their closing statement at the Naha District Court.

Ramsey, 24, has shown "no regret," and twice rejected "without any legitimate reason" a police request to appear for questioning, they said.