A special unit of the Cookeville police department, which concentrates on Internet Crimes Against Children, has now gathered enough evidence to bring indictments against a Crossville man for sexual exploitation of a minor. 30-year-old Luke Niles Houston is accused of sending sexually explicit material over the Internet three times in the past two months to someone who was posing as a teenager. The relevant state law makes it a crime to "display to a law enforcement officer posing as a minor ... any material containing sexual activity ... where the purpose of the display can reasonably be construed as being for ... sexual arousal or gratification." Violation of the law is a Class E felony. Houston was arrested on the charges Monday and made a $25,000 bond. He'll be back in court on April 4th.