Apparently, Aaron Hernandez is not done killing yet.

The former Patriots player is serving a life sentence at the Souza Baranowski Correctional Center in Shirley, Massachusetts for the murder of Odin Lloyd. Rather than become a benefit to society, Hernandez opted to make a shank instead.

Key Evidence May Be Thrown Out In Hernandez Boston Shooting

The homemade knife was found in his cell. He was taken out of general population after the incident and put in a segregation unit, per Fox Boston.

Good thinking. Might not want a convicted murderer running around shanking people.

NFL Players Stopped Getting Arrested After Hernandez Went To Jail

And to think -- with Rob Gronkowski's injury -- this is the man the Patriots desperately needed in New England on Sunday.

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