Newly released prison records say ex-NFL star Aaron Hernandez was a member of the Bloods street gang.

A death report released Friday by Worcester District Attorney Joseph Early Jr. also says Hernandez once threatened to kill a correction officer and his family.

The reports were released in response to a public records request from The Associated Press.

They show he was disciplined for the threats against a correction officer and for submitting a urine sample that tested positive for Neurontin, an anti-epileptic drug that is also used as a painkiller.

The following month he was disciplined for "being in possession of STG paraphernalia." STG means security threat group -- prison language for gangs.

Two months later in November, Hernandez was disciplined for "threatening to kill a corrections officer and his family.”

The events took place while he was housed in a Bristol County prison from 2013 to 2015.

Hernandez was found hanged in his cell at the Souza-Baranowksi maximum-security prison on April 19 while serving a life sentence for a 2013 murder.

The Associated Press contributed to this report.

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