Former NFL star Aaron Hernandez has reportedly killed himself, while in prison.

CBS News reports that prison officials at Souza Baranowski Correctional Center in Shirley Massachusetts found Hernandez hanging in his prison cell early Wednesday morning.

The former New England Patriot reportedly used a bed sheet in his cell to hang himself. He was transported to a nearby medical facility where he was later pronounced dead.

Hernandez was serving a life sentence after being found guilty of the 2013 shooting of Oldin Lloyd.

Aaron Hernandez was 27 years old.

UPDATE: The attorney for Hernandez says that he has launched an investigation in his client's death. He thinks that it could be murder. Jose Baez says that Hernandez may have been murdered by another inmate or by someone who works in the prison.