Aaron Hernandez has been indicted on double murder charges from a 2012 incident.
In the 2012 case, victims Daniel de Abreu and Safiro Furtado were shot as they sat in a car in Boston's South End. Police have said they were shot by someone who drove up alongside in an SUV and opened fire.
Boston police have written in an affidavit there is probable cause to believe Hernandez was driving a vehicle used in the shooting and "may have been the shooter."