Some more reporting on this:

A British nuclear expert who fell from the 17th floor of a United Nations building did not commit suicide and may have been hurled to his death, says a doctor who carried out a second post-mortem examination.

http://www.dailymail.co.uk/news/worldnews/article-1224377/British-nuclear-experts-17th-floor-UN-death-plunge-suicide.html.

See also:
http://www.foxnews.com/story/0,2933,570786,00.html
http://www.presstv.ir/detail.aspx?id=110167&sectionid=351020606.