SAN FRANCISCO (CBS SF) — A University of California at San Francisco psychiatrist who was arrested last week pleaded not guilty Monday to charges of possessing and distributing child pornography.

Billy Lockhart, 36, a resident at UCSF’s Department of Psychiatry, is accused of possessing around 1,500 images and 280 videos of children being sexually molested, some of them showing infants as young as 6 to 8 months old, prosecutors said Monday.

But on Friday, he told the court that he made a mistake under pressure.

"I am renting a flat for my ex (girlfriend) and daughter in Robertson, but I actually stay in Malmesbury.

San Francisco Superior Court Judge Sharon Reardon kept bail set at 5,000, but said she would be open to prosecutors filing a formal motion.

As a condition of his release, Lockhart is not allowed to use the internet, have contact with children or set foot on the UCSF campus, where he has been suspended from his position.

He described him as an “intern” at UCSF and argued that he was not personally wealthy.

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