Aaron Hernandez was arrested on murder charges on June 25, 2013, in connection with the death of Odin Lloyd.
Lloyd, who was dating the sister of Hernandez's fiancee, had been partying with Hernandez just before his June 17, 2013, death. The semi-pro football player's body was found by a jogger the next afternoon in an industrial park in North Attleboro, Massachusetts.
Investigators believe Hernandez's simmering anger over two incidents led him to allegedly kill Lloyd two nights later, sources told CNN. One incident involved Lloyd seeing guns and ammunition, and the other involved a conversation at a nightclub.
Lloyd was picked up in a car said to be driven by Hernandez with two of his associates, taken to an industrial park, shot and killed, according to prosecutors. Those associates, Ernest Wallace and Carlos Ortiz, are also charged with first-degree murder.
Two hours after Hernandez's arrest, the Patriots dropped him from the team. The team had been signed him to a $40 million contract extension less than a year earlier.
While investigating Lloyd's murder, investigators found evidence they believe ties Hernandez to another murder case, according to CNN.
Investigators allege Hernandez shot and killed Daniel Abreu and Safiro Furtado on July 16, 2012, because one bumped into him on a nightclub dance floor and spilled his drink. Prosecutors allege Hernandez trailed the men in his SUV after leaving the nightclub and shot them at a stoplight. He has pleaded not guilty in Abreu and Furtado's deaths.
Hernandez has also been accused of shooting a friend, Alexander Bradley, in the face and leaving him for dead in an industrial park in south Florida in February 2013.Prosecutors say Hernandez felt "disrespected" because Bradley challenged him after the football player refused to return to a strip club to retrieve Bradley's cellphone. Bradley is suing Hernandez.
On Aug. 22, 2013 a Bristol County, Massachusetts grand jury officially indicted Hernandez on first-degree murder charges. Hernandez has pleaded not guilty, as have Wallace and Ortiz.
In July 2014, Hernandez's attorneys tried to subpoena his work and medical records from the New England Patriots, including records that "may bear upon (Hernandez') mental state at the time ... of Lloyd's murder." They are alsotrying to quash a June 18, 2013, search warrant executed at Hernandez' home.
Hernandez's trial for the charges related to Furtado and Abreu's deaths is set for May 2015. A trial date for charges connected to Lloyd's death was expected to be set soon.