One of the state's most prolific units preventing child sex offenses has shut down due to claims of ethnical violations.

The Jefferson County District Attorney's Office announced the closing of the CHEEZO unit on Friday afternoon.

The Colorado Attorney Regulation Counsel says people working for the DA's office run by lawyers shouldn’t be able to use fake personas to catch criminals—calling the practice unethical.

District Attorney Pete Weir says he's disappointed, but there are still other ways teams are watching for sex offenders.

That unit, which usually operated in four person teams, has been involved in nearly a thousand cases, most involving men trying to meet young women over the internet.

The program has arrested 924 people since it launched in 2005. 57 of those arrests were made this year, according to