White paper on crime 2010 Part3/Chapter5/Section2/1
The number of suspects (limited to non-traffic penal code offenses and special act offenses but excluding violation of road traffic related acts) not prosecuted in public prosecutors offices due to insanity was 464 in 2009 (See Table 2-2-3-3). In addition eight persons were also found not guilty on the grounds of insanity in a court of first instance in 2009 (Source: The General Secretariat, Supreme Court).