BOULDER, Colo. -- CU Boulder student Conner Dudrey says he felt isolated and slowly drifting away from life outside the Resurrection Church when he joined in 2014.

“They kind of gradually isolate you,” said ex-member, Connor Dudrey.

Connor’s mother, Marie Dudrey, told Denver7 her son’s behavior after joining the church raised several red flags.

“I could tell that they were trying to lure him away; he came home, [he] just [was] not himself," said Marie Dudrey.

Conner said the church used several tactics to isolate him from family and non-members.

“The further in and more involved you get with the church they start convincing you that people from other churches probably are bad company, and if for instance, your family views and opinions conflict with their views and opinions, then they start to convince you your family is bad company as well,” said Conner Dudrey.

Conner eventually decided to leave but said leaving wasn't easy.

“They determined they couldn't have any sort of association or contact with me, because I had become bad company in their eyes,” said Conner Dudrey.

The CU religious campus organizations that police churches that interact with students on campus has revoked the church's membership after receiving three complaints from students in four years.

Zach Parris, head of the CU Religious Campus Organizations, said the church violated their standard code of ethics.

"When students joined Resurrection Church they were strongly encouraged to cut all outside relationships,” said Zach Parris.

Marie said she is glad her relationship with her son was salvaged.

“My heart just goes out to all the other parents whose kids don't even talk to anymore; they are not even part of their family because of churches like resurrection."

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