Four more people have been arrested in the deaths of a missing Nebraska couple and their unborn baby after human remains believed to be theirs were located last week, according to police. Authorities initially arrested Sterling James, 24, and his wife, Sayde Titus, in connection with the missing person's case which turned into a homicide investigation, the Lincoln Police Department said in a Monday, February 2, news release. James is accused of shooting Hannah Neville, 26, and her husband, Roberto Tanner, 27, in Lincoln the evening of January 15 or the early morning of January 16, police said.