Aaron Hernandez's high school coach worried about the former NFL star's future, because he grew up around criminal activity and would continue to associate with convicts as an adult.

Aaron Hernandez Girlfriend Storage Unit Searched: She Made 'Overt Attempts To Hide Evidence', Investigators Said 

Hernandez's mother, Terri Hernandez, was a phone operator for a local gambling ring in their hometown of Bristol, according to The Boston Globe. It's not clear if Aaron was aware of his mother's criminal activity while he was growing up, but police wiretaps reportedly discovered Terri was relaying bets on sports teams, including her son's future employer the New England Patriots.

Aaron's father, Dennis Hernandez, was a positive figure in his life, but when he passed away unexpectedly in 2006 from complications after routine hernia surgery, his son's life began to take a turn for the worse. Aaron allegedly joined a local Bloods street gang soon after. In 2010, when Aaron entered the NFL at the age of 20, his high school coach, Doug Pina, was still concerned about whether his former star player could overcome his demons.

"Personally, I've always had concerns.'' Pina said of Aaron in an interview with the Hartford Courant in 2010. He's still finding himself. With the right people around, [if] he keeps his head straight, he'll do very well.''

The coaches admonition was warranted, as Hernandez would continue to surround himself with a criminal element throughout his days as an elite player for the Florida Gators in college and later as an NFL tight end.

Aaron Hernandez Latest Case Update: Police Murder Weapon Search Ends & New Surveillance VIDEO Surfaces 

A house at 114 Lake Ave. in Bristol, Conn., across from a field where Aaron once played football, was a hub for his criminal associates. The home is owned by Hernandez's uncle and it's where the 23-year-old would hang out with his current co-defendants in the Odin Lloyd murder case, Ernest Wallace and Carlos Ortiz.

Wallace, described as Aaron's "right-hand man" by investigators, was sentenced to 120 days in jail for various crimes between 2010 and 2012, including larceny. Ortiz, a 27-year-old with a lengthy rap sheet, has been found guilty of 15 crimes in Connecticut, including assault, since 2004.