Hispanic crime: The N.F.L. player Aaron Hernandez, who has been charged with murder, is also being investigated in connection with a double homicide in Boston in 2012

It was not clear when investigators began to look at Hernandez in connection with the double killing or what they believe his involvement may be. Hernandez, 23, has been charged with murder and five gun-related offenses in Attleboro District Court in Massachusetts in connection with the murder of Odin Lloyd, 27, whose body was found in a North Attleborough, Massachusetts industrial park. Hernandez is being held without bail. On the murder charge, he faces a life sentence without parole.