A Commack man was sentenced Monday at Nassau County Court in Mineola to two-and-a-third to seven years in prison for possessing DVDs containing sexually explicit videos and images of children as young as three-years-old.

Richard Sineno

Richard Sineno, 23, pleaded guilty in September to two counts of possession of a sexual performance of a child.

He was arrested on Oct. 19, 2007 after his roommate and fellow classmate at the New York Institute of Technology inadvertently discovered child porn on two DVDs in the Glen Cove apartment they shared at the time, Nassau prosecutors said. The roommate turned the DVDs over to Glen Cove police, who contacted the district attorney’s office and obtained a search warrant for Sineno’s apartment.

Investigators recovered 53 sexually explicit photos and 10 sexually explicit videos in Sineno’s apartment, prosecutors said.

“This defendant was especially sophisticated in his ability to encrypt and conceal his online activity from state and federal law enforcement, which makes him especially dangerous to our community,” Nassau County District Attorney Kathleen Rice said in a statement.