Police said 32-year-old Randol Wiggins was first arrested on child porn charges in April and released on bond. He was arrested again last month on sexual abuse charges.
Detectives say he was at a state women's prison in Central Texas, ministering inmates, when he was arrested.
Church leadership told ABC13 that the former youth pastor stepped down from his role two weeks ago.
According to officials, "hundreds" of videos were found on a computer belonging to Kevin Hartgrove, who volunteered with the youth at a Harris County-based church.
A federal criminal complaint says Boling ISD Board President Jerry Svatek Junior was in a chat room when he told an undercover officer about sex acts with a child.
ABC13 learned that the FBI analyst lives in the home with his two school-aged children and wife, where authorities recovered the material during a raid.