A hearing is scheduled in Fall River Superior Court on Friday afternoon.
Prosecutors are seeking recordings of Hernandez’s jailhouse phone calls in which he allegedly communicated about the case in “coded messages” and discussed his belief about his criminal liability. They also want a judge to order the Bristol County sheriff to turn over records of visits related to Hernandez’s jailhouse visitors.
The former New England Patriots tight end has pleaded not guilty to murder in the death last summer of Odin Lloyd, a 27-year-old Boston man who was dating the sister of Hernandez’s fiancee.
Four others, including his fiancee and cousin, also have been charged in connection with the case.