KENNEWICK, Wash.--When someone is convicted of a sex crime they have three days to register as a sex offender after being released from custody.
Kennewick police say one of the most challenging tasks for them is keeping records up to date, especially where they live.
There are three different levels of sex offenders. Depending on the convictions the Department of Corrections identifies each person by a level of offense.
Craig Hanson of the Kennewick Police Department says "it's the third degree offenders that are more likely to offend than the second degree. The first degree offenders are on the low end of the spectrum."
Depending on the severity of their convictions, some offenders are registered for only a few years and others for life.
To learn if there are any sex offenders in your neighborhood you can check out local law enforcement websites.