Testimony set to begin in ex-NFL star's double murder trial

The former New England Patriots tight end already is serving a life sentence after being convicted in the 2013 killing of Odin Lloyd, a semi-professional football player who was dating the sister of Hernandez's fiancee.

The men who were killed — Daniel de Abreu, 29, and Safiro Furtado, 28 — were close friends who attended high school and served in the military together in Cape Verde before coming to the United States and settling in Boston.