The former Valley Center police sergeant accused of child sex crimes has pleaded not guilty to the charges against him.

Thomas Delgado is charged with sexual exploitation of a child, sexual battery, attempted sexual battery, official misconduct and three counts of harassment by a telecommunication device.

On November 11, 2016, a family member concerned about Delgado "constantly texting teenage girls" contacted the Sedgwick County Sheriff's Office.

Prosecutors say he sent more than a thousand text messages to girls who were 14 to 17-years-old. They say some of the texts contained inappropriate content and photos.

Delgado is set to go to trial on November 6, 2017.