Hernandez is accused of killing Daniel Abreu and Safiro Furtado in the South End.
Tanya Singleton changed her plea to guilty during a hearing in Boston on Tuesday.
Aaron Hernandez pleaded not guilty Wednesday to two murder charges for allegedly ambushing and gunning down two men in 2012 after one accidentally bumped him and spilled his drink at a nightclub.
The past two years have been an emotional roller-coaster for the families of Daniel Abreu and Safiro Furtado.
Former New England Patriots tight end Aaron Hernandez was indicted on first-degree murder charges Thursday in a double murder in the South End.
Boston police write in the June 28 affidavit there is probable cause to believe that Hernandez was driving a vehicle used in the shooting and “may have been the shooter.”
New surveillance footage allegedly shows former New England Patriot Aaron Hernandez with two men hours before they were shot-to-death in the South End.