A yearlong independent probe into missing drugs from the Attleboro Police Department's evidence locker has been completed without any charges.

The investigator, however, blasted the department for poor security and record keeping and went so far as to call it "negligent" and the thefts "inexcusable."

The theft of drugs including marijuana, cocaine, heroin and oxycodone took place between 2006 and 2011. The missing drugs had been marked for destruction and were not part of court proceedings.

The Sun Chronicle reports that despite numerous interviews, lie-detector tests, as well as information from a "confidential source," the investigator determined there was "insufficient evidence" to name a suspect.

Chief Kyle Heagney says he's disappointed no one is being charged but is confident the thief no longer works for the department.

[Associated Press]

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