I do feel that it is appropriate to include in the article to show the fact that the incident caused untold grief for the people involved.  I lived in Minnesota when the small farms were being lost to large corporate farming.  It was heartbreaking and there were plenty of suicides.  I live on the coast of Maine and I am well aware of what our local men and women are going through as they are losing their way of life as third or more generations as fishermen.  If you want to say something like the suicide was reported as as the 13th death, that seems reasonable.  But to call it a death in the same way that the men on the rig were deaths and list it with the deaths, that is IMO not appropriate.