A Mount Vernon doctor and a Mahopac man were charged Wednesday with hatching a scheme to sell prescription oxycodone pills with a street value of almost half a million dollars, state Attorney General Eric Schneiderman said.

Investigators Wednesday morning arrested anesthesiologist Dr. Arnold Roth, 60, after searching his residence and professional offices at 35 Central Parkway in Mount Vernon, and Nidal Aljamal, 37, of Mahopac, charging that the two amassed 8,823 30-milligram pills with a street value of about $264,690 from July 2011 to July 2012.

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Investigators said Roth also wrote 48 prescriptions for Aljamal as well as prescriptions for 6,210 pills with a street value of $186,300 for three other people. Those pills were dispensed from September 2011 to August 2012 and were turned over to Aljamal for distribution, officials said.

Roth has been charged with 11 counts of criminal sale of a prescription for a controlled substance and fourth-degree conspiracy, both felonies. He faces up to 5 1/2 years in prison if convicted.

Aljamal is charged with three counts of criminal possession of a controlled substance, a felony, and faces up to nine years in prison if convicted.

Both Nadal and Roth appeared yesterday before Town of Hyde Park Justice John M. Kennedy and had bail set at $10,000 cash or $30,000 bond. Both were ordered to surrender passports.

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A woman answering the phone at Dr. Roth's home yesterday evening declined to comment. A man identifying himself as Aljamal's father declined to comment.