A youth pastor in Cedar Hill, Texas stands accused of sexually assaulting three boys in total.

29-year-old Willie Lee Bell Jr. was a youth pastor at First United Methodist Church of Cedar Hill.

Authorities say he lured and sexually assaulted two boys at an apartment in February, and was actually caught in the act last week at a Dallas apartment complex.

Witnesses caught a man, identified as Bell, abusing a six-year-old boy Thursday afternoon. The boy’s mother says bystanders attacked Bell to stop him.

“If it wasn’t for them, he probably would have done more to my child,” she said.

Dallas police arrested him in West Oak Cliff.

United Methodist Church of North Texas said, in a statement that it has no knowledge of any criminal acts happening at the church, and that it’s cooperating fully with investigators.