Pro-Russian separatists seized control of regional state TV headquarters in the eastern Ukrainian city of Donetsk.
ITV News Europe Editor James Mates has tweeted:
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Rain in the north tonight, cloudy and humid in the south
In an exclusive interview with ITV News, 100 metre world champion Justin Gatlin also said that booing at the World Championships "did hurt".
The 26-year-old had just given birth to her third child and was being transferred to a different floor when the tragedy happened.