The 24-year-old Hernandez is accused of killing Daniel de Abreu and Safiro Furtado. A third man was wounded in the attack. Prosecutors say they were gunned down by Hernandez as their vehicle was stopped at a red light after they left the nightclub.
Hernandez has pleaded not guilty in the killing last year of Odin Lloyd, 27, a semi-pro football player whose body was found near Hernandez's home. He is expected to be arraigned on the new charges in Suffolk Superior Court next week.