BOSTON (AP) — Federal prosecutors are gathering information about contact that a former medical director of Phillips Academy in Andover who is facing child pornography charges has had with minors.

According to a judicial order filed Friday in federal court in Boston, "the government has produced and anticipates continuing to produce various materials that contain the names of certain minors known" to Dr. Richard Keller.

The order did not specify the nature of the contact or say when it took place.

A lawyer for Keller said in an email to The Boston Globe ( ) that the doctor "has not been and will not be accused of anything with respect to these names."

The 56-year-old Keller of Andover was arrested in September on charges of receiving child pornography. He has pleaded not guilty.


Information from: The Boston Globe,