Colorado detectives traced the e-mail to St. John's University.
Armed with a search warrant, New York police said investigators seized Reverend Plock's computers and the home-made videos.
Reverend Plock serves as a youth minister at St. John's.
Plock was released on $150,000 bond on the condition he check into St. John Vianney Center, a residential psychiatric facility for the clergy in Downington, Pa.
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