"Combating sports violence remains our unwavering priority," Mallios emphasized in a statement.
The victim, 31-year-old Yiorgos Lyggeridis, was struck by a marine flare that was discharged outside a sports arena during the Olympiacos-Panathinaikos volleyball match near Piraeus. Lyggeridis succumbed to his injuries at a hospital, prompting the closure of stadiums nationwide for several weeks.
Mallios disclosed that a four-month police probe uncovered links between hooligans and organized crime. Over 150 individuals are believed to be connected to the incident.
Recent years have witnessed numerous incidents of violence and deaths at sporting events in Greece. In August, a supporter of the AEK Athens football club, age 29, was fatally stabbed during clashes between Athens and Dinamo Zagreb fans on the night before a qualifying match for the Champions League.