ITV News Europe Editor James Mates wrote on Twitter:
Fmr world heavyweight champion Vitali Klitschko has announced he is pulling out of race to be #ukraine President. Will be duller race.
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Nigel Farage warned on Friday Britain was "far less safe" and exposed to Cologne-style sex attacks because of open-door immigration.
Arthur Simpson-Kent, 48, admitted killing Ms Blake and their sons according to his lawyer.
Two brothers have been arrested on suspicion of murder after their parents were found dead in their own home over the weekend.