When park dispatch conducted a routine wants and warrants check on a person on July 10th, the NCIC entry showed that the man was not wanted – but that he was a convicted sex offender who was required under state and federal law to register with local law enforcement authorities. Subsequent investigation revealed that he’d been convicted of a sex offense in California in 2001, that he was a concession employee residing in the park, and that he’d made no attempt to register with the park or any other nearby law enforcement agency. Investigators also found that he’d traveled to several states in recent years and worked at other locations outside California for extended periods of time without registering with any police department. A criminal complaint was accordingly filed against him for violation of 18 USC 2250(a) (failure to register as a sex offender) and a felony warrant was obtained. On July 19th, rangers arrested him. He subsequently appeared in magistrate’s court and was ordered held pending indictment by US marshals. He was indicted in September and again ordered held pending trial or plea agreement. This was the second federal prosecution of an 18 USC 2250 violation in Wyoming since the law was enacted in 2006.