Tuesday, December 18, 2012

The former medical director of an exclusive Massachusetts prep school has pleaded not guilty in federal court to child pornography charges.

Fifty-six-year-old Richard Keller of Andover entered the pleas at his arraignment Tuesday.

Keller was indicted last week on two counts of receiving child pornography and one count of possessing child pornography. The indictment says Keller obtained depictions of minors in sexually explicit conduct, including boys from about 7 to 16 years old.

His lawyer declined to comment outside court.

Authorities alleged Keller had child porn delivered to him at Phillips Academy campus before his 2011 resignation.

Keller was arrested in September on a charge of receiving child pornography. He's been jailed since after voluntarily agreeing to detention.

Keller worked at Boston Children's Hospital and taught at Harvard Medical School.