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A 73-year-old man who was arrested while living in a Cathedral City storage unit full of child pornography was sentenced Monday to 2-1/2 years in federal prison.

Richard L. Arlington pleaded guilty to one count of possession of child pornography. Upon his release from prison, he will spend 10 years under supervised probation and will have to register as a sex offender.

Arlington once shared a house in Palm Springs with Walter Lee Williams, a former USC professor who was sentenced last week to five years in federal prison for flying to the Philippines and sexually assaulting boys he had met online.

Both Arlington and Williams were members of a religious group called the Buddhist Universal Assn. of Los Angeles, which espoused an ideology of extreme sexual freedoms, the FBI said.

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