Part-time yakuza outnumbered regulars in 2007 for the second straight year, the National Police Agency said in a report released Thursday.

They surpassed full-timers in 2006 for the first time since the agency began compiling such data in 1958.

The NPA defines a full-time, or regular, gangster as a registered member of an underworld syndicates. Part-timers are not registered but commit crimes on behalf of the mob.