BY: John Mamola

Former New England Patriots tight end Aaron Hernandez has been indicted on murder charges in a 2012 double slaying in Boston announced Thursday morning.

Hernandez's lawyers did not immediately respond to messages from the Associated Press seeking comment

Boston police spokeswoman Neva Coakley confirmed the indictment Thursday to the Associated Press. Hernandez is already being held without bail at a Massachusetts prision after pleading not guilty to murder of 27-year-old Odin Lloyd last year.

According to the 2012 case, victims Daniel de Abreu and Safiro Furtado were shot as they sat in a car in Boston's South End when police 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."