British Athletics' Ed Warner says Oscar Pistorius is unlikely to be invited to the Anniversary Games.
Warner says it is nothing to do with guilt or innocence, but to avoid a "media circus".
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Shocked neighbours have told of their fear and paid tribute to a "nice lady" found stabbed to death at her home in Muswell Hill.
The deputy leader of far-right group Britain First has been arrested in London over a speech made at a rally in Belfast this summer.
Captain Mike Green, a senior flying instructor, was piloting the two seater helicopter involved in the crash.