PITTSBURGH — Police said three people were fatally shot at a Bloomfield apartment building, though investigators haven’t said why or whether they have any suspects.

The dead include a man and a 20-year-old woman in an apartment, and another man found dead behind a neighboring building. Police believe that man may have jumped out of a window where the others were killed, possibly to escape the carnage. Police were called to the scene on Mathilda Street shortly after midnight Sunday. No names were reported.