(La Porte County, IN) - A man is accused of child sex crimes when he lived in Westville. 29-year-old Thomas Back was arrested Monday by Indiana State Police.

Back is charged with three counts of child exploitation and two counts of possession of child pornography. While the incidents occurred in Westville, Back now lives in the Walkerton area.

So far, specifics involving the allegations have not been released. But, police say authorities became involved after a tip was received from the National Center for Missing and Exploited Children. An online account had been used to exploit children.

Back was being held in LaPorte County Jail on a $20,000 bond.