A British nuclear expert who fell out of the 17th floor of a United Nations building did not commit suicide, London's Daily Mail reported a doctor who carried out a second autopsy as saying.
The doctor said Timothy Hampton may have been hurled to his death.
The 47-year-old nuclear scientist was found dead last week at the bottom of a stairwell in Vienna and an initial autopsy concluded that there were ‘no suspicious circumstances.’
Professor Kathrin Yen, of the Ludwig Institute in Graz, Austria, believes one possible theory is that Hampton was carried to the 17th floor from his 6th floor office and thrown to his death.
"In my opinion, it does not look like suicide. My example is that somebody took him up to the top floor and took him down," Yen said.
A source told the Daily Mail that Hampton was "not the suicide type."
Hampton reportedly had been working for the Comprehensive Nuclear-Test-Ban Treaty Organization (CTBTO) at the U.N. building.
A U.N. spokeswoman said an investigation into the case continues, though Austrian police have concluded it was suicide.