A second victim has died from a double shooting in Roxbury last week, Boston police said. Sean Repetto, 25, of Quincy was killed along with Victor Otoadese, 21, also of Quincy, police said. Both were shot around 2:45 p.m. on Nov. 28 at Longmeadow and Batchelder streets. They were found at the scene by police and taken to Boston Medical Center, police said. Otoadese was pronounced dead that day, while Repetto, who was placed on life support, died Sunday, police said. No arrests have been made and the Boston Police Homicide Unit asks anyone with information to call 617-343-4470.