(CNN) -- A second Massachusetts state chemist in just a few months has been accused of mishandling drug evidence, the attorney general's office said Sunday. Sonja Farak, 35, who worked at the Massachusetts State Crime Laboratory in Amherst, was arrested at her Northampton home Saturday night by Massachusetts State Police and is facing two counts of tampering with evidence, one count of possession of a Class A substance, and one count of possession of a Class B Substance, according to Attorney General Martha Coakley. Farak remained in jail Sunday, the attorney general's office said. "We allege that this chemist tampered with evidence, placing the integrity of that evidence in question," Coakley said in a statement.
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Massachusetts chemist accused of tampering with evidence, drug possession
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Sonja Farak took heroin, cocaine from evidence inventory, attorney general alleges
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Another chemist was accused of tampering, affecting 34,000 drug cases, in October
The crime laboratory in @placeholder stores and analyzes alleged controlled substances seized by local and state police.