For the third time since February 2014, Hernandez reportedly fought another inmate while incarcerated. The latest incident occurred at the Souza Baranowski Correctional Facility in Shirley, Mass., according to WHDH-TV in Boston.
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No injuries were reported.
The former New England Patriot is serving a life sentence for the murder of Odin Lloyd, and stands trial in a separate double murder case set to start in December.
Hernandez was involved in a fight at the same facility in May while serving as a lookout, and also punched an inmate in February 2014 while serving time at the Bristol County House of Correction.