Investigators in the Aaron Hernandez case are being accused of concealing information about the NFL star's drug use in prison.
An inmate says Hernandez had been smoking a synthetic marijuana called K2 for two days before his suicide.
The information was made public after a lawyer pressed for a state report to be released.
A spokesperson for the department of corrections says they were trying to avoid compromising an investigation into prison drug activity.
The spokesman has not explained the specifics of that particular investigation.
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