The Herald says a fatal shooting happened at 77 Lenox St. in the South End. The Globe says it happened at 77 Lenox St. in Roxbury. Carpundit says the Herald may just be trying to sell papers by stirring up fear in the South End:
... For those of you from out of town, Roxbury is the part of town you don't want to live in; South End is the rapidly-gentrifying buffer between Back Bay (where you do want to live) and Roxbury. South End is known for, among other things, its gay community, its art community, its restaurants, and its fast-appreciating housing prices in exactly the way Roxbury isn't. ...
For what it's worth, Boston Police called it the South End.