Calvin Nagy
Calvin Nagy (Boulder County Sheriff's Office)

Calvin Nagy, who was twice convicted of rape in Boulder County and failed to appear earlier this month for sentencing in his most recent case, is now the most-wanted sex offender in the state of Colorado.

Nagy, 37, sits atop the latest Colorado Top 100 most-wanted sex offenders list maintained by the Colorado Bureau of Investigation after a warrant was issued for his arrest for failing to appear at a scheduled hearing.

Nagy was convicted in November of sexual assault, a Class 4 felony, and misdemeanor charges of third-degree assault, attempted third-degree assault, criminal mischief and menacing.

But Nagy — who was living in Vail and free on $7,500 bond — failed to appear for his sentencing in Boulder District Court on Feb. 6. He also failed to check in by a landline the week before his sentencing, a violation of his bond conditions.

Nagy previously was convicted of sexual assault in Boulder in 1996 and was sentenced to probation in that case.

The No. 1 ranking on the CBI list "certainly reflects the view of my office that he is a significant public safety risk as long as he is at large," Boulder County District Attorney Stan Garnett said Wednesday. "We appreciated the assistance of the Colorado Bureau of Investigation and other law enforcement agencies in looking for him."

Boulder police said that Nagy, who has relatives in Michigan and was last seen in Denver, was last known to be driving a red 2009 Nissan XTerra. He might have a 10-year-old Chesapeake Bay retriever with him.

Anyone with information on Nagy is asked to contact Boulder police at 303-441-3333 or the Colorado Bureau of Investigation's 24-hour tip line at 303-239-5732.

Those who wish to remain anonymous may contact the Norther Colorado Crime Stoppers at 1-800-222-TIPS or crimeshurt.com

Contact Camera Staff Writer Mitchell Byars at 303-473-1329, byarsm@dailycamera.com or twitter.com/mitchellbyars.