Registered sex offender arrested in Boulder in connection to assault

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BOULDER, Colo. -- A registered sex offender has been arrested in connection with a sexual assault of a 14-year-old girl, the Boulder Police Department said Monday.

Christopher Ehlebracht, 29, met the girl from Westminster through the online application Whisper, police said. The app is used by people to "anonymously vent problems," police said.

On Thursday, police said Ehlebracht picked up the girl at her home and drove her to his home in Boulder, where he sexually assaulted her.

Police found Ehlebracht on Monday and arrested him on a warrant alleging sexual assault on a child, enticement of a child and contributing to the delinquency of a minor

He is being held at the Boulder County Jail.

In 2011, Ehlebracht was convicted of attempted sexual assault on a child in Westminster, police said.