I think you're right, that it was a terrible accident.
London Bombing Suspect May Have Studied At N.C. State
RALEIGH, N.C. -- An Egyptian-born academic being sought by London police as part of their investigation into last week's terrorist bombings spent a semester at North Carolina State University, school officials said Thursday.
The Times of London, quoting unidentified police sources, said detectives were interested in locating Magdy el-Nashar, 33, who recently taught chemistry at Leeds University in northern England. (snip)
http://www.nbc17.com/news/4722027/detail.html