You're reading: Guardian: Counter-terrorism police take over Sergei Skripal ‘poison’ case

The investigation into the possible poisoning of the Russian spy Sergei Skripal gained new momentum on March 6, as Scotland Yard announced its counter-terrorism police would take charge, and the foreign secretary, Boris Johnson, promised a “robust” response if the Kremlin’s role in the case was proved.

Skripal was found slumped unconscious on a bench in Salisbury on March 4 afternoon. The woman discovered next to him has been identified as Skripal’s 33-year-old daughter, Yulia. Both remain critically ill and in intensive care after exposure to an “unknown substance”.

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