"Deeply disturbing": U.K. Prime Minister Theresa May says the police investigation into the latest Novichok nerve agent poisoning "will be leaving no stone unturned"

"Deeply disturbing": U.K. Prime Minister Theresa May says the police investigation into the latest Novichok nerve agent poisoning "will be leaving no stone unturned" https://t.co/603KqpIkJC pic.twitter.com/O7OROxHrs8

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