A hearing in the case is scheduled for Monday afternoon in Fall River Superior Court. The defense has accused District Attorney Samuel Sutter's office of violating a gag order in the case and jeopardizing Hernandez's right to a fair trial. The prosecution denies the allegations.
A judge is expected to hear arguments related to that matter.
Hernandez has pleaded not guilty to murder in the June shooting death of Odin Lloyd, a 27-year-old semi-professional football player who was dating the sister of Hernandez's girlfriend.
Lloyd's family last week filed a wrongful death suit against the ex-Patriot, seeking unspecified damages.