The state’s district attorneys are taking their concerns over wrongdoing at a state drug testing laboratory directly to Governor Deval Patrick, drafting a letter critical of the alleged mishandling of evidence and asking for more information to address what could be a damaging blow to the prosecution of thousands of cases. The prosecutors and the state’s public defender’s office learned that a chemist at the center of a criminal investigation had been involved in handling more than 50,000 drug samples.
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