OSWEGO -- An Oswego County man is facing multiple charges related to possessing child pornography.

New York State Police and U.S. Marshals executed a search warrant Wednesday at the residence of William Knopp, 48. They found Knopp was in possession of several images and videos of children, under the age of 16, engaging in sex acts.

Knopp is charged with three counts of possessing a sexual performance of a child and 1 count of promoting a sexual performance of a child.

He was arraigned in the Town of Volney Court and released.

He is due back in court September 26th at 7:00 p.m.