Fig. 3-1-2-3 shows the number of cases and persons referred to public prosecutors offices for special act offenses (excluding violations of traffic acts including four statute traffic related acts; hereinafter the same in this section.) committed by visiting foreign nationals and other foreign nationals since 1980.
  The numbers of cases and persons referred to public prosecutors offices for special act offenses committed by visiting foreign nationals show that both have been higher for visiting foreign nationals since 1990 than for other foreign nationals. The number of cases for visiting foreign nationals referred to public prosecutors offices decreased by 2,153 (14.5%) from the previous year in 2006. The number of visiting foreign nationals referred to public prosecutors offices decreased by 1,949 (15.4%) from the previous year in 2006.

Fig. 3-1-2-3  Numbers of cases and persons referred to public prosecutors offices for special act offenses committed by visiting foreign nationals and by other foreign nationals (1980-2006)

  Fig. 3-1-2-4 shows the number of cleared cases for violations of the Immigration Control Act, drug-related acts, and the Anti-Prostitution Act committed by visiting foreign nationals over the last 10 years.
  The number of cases cleared for violations of the Immigration Control Act had been on an increasing trend since 2001, but decreased two consecutive years from 2005. By type of violation, illegal overstay was the largest with 5,812 cases, followed by illegal stay with 2,822 cases, non-possession of passport/refusal to show passport with 926 cases, and engaging in activities outside the permitted scope with 217 cases in 2006 (Source: The Criminal Investigation Bureau, National Police Agency).
  The number of cases cleared for violations of drug-related acts and the Anti-Prostitution Act committed by visiting foreign nationals, despite changes in each year, have been leveling off.

Fig. 3-1-2-4  Number of cases cleared for Immigration Control Act violations, etc. committed by visiting foreign nationals (1997-2006)