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PITTSBURGH (KDKA) — Two doctors from UPMC are facing felony charges.

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Police say Dr. Omar Almusa and Dr. Marios Papachristou are accused of writing prescriptions for each other’s family and friends in exchange for money or non-monetary favors.

Police say thousands of hydrocodone pills were illegally prescribed, and none of the people who received the prescriptions were patients.

According to the criminal complaint, the alleged incidents happened inside UPMC Presbyterian Hospital.

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The doctors work in the radiology department.

In a statement, UPMC says the charges were the result of an investigation into activities related to their practices.

The full statement reads:

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“The charges against Drs. Almusa and Papachristou were the result of an internal investigation into activities related to their practices. They have been arrested and suspended.”