I can confirm tonight that there has been a significant development. And that the Counter Terrorism Policing Network is now leading the investigation into this incident. This evening I've received test results from Porton Down that show that the two people have been exposed to the nerve agent Novichok. I appreciate there will be a great deal of speculation as to whether this incident is linked to those events in Salisbury in March this year.
I would add that the complex investigation into the attempted murders of Yulia and Sergei remain ongoing. And detectives continue to sift through and assess all the available evidence. They are following every possible lead to identify those responsible for what remains a reckless and barbaric criminal act. However, I must say that we are not in a position to say whether the nerve agent was from the same batch that the Skripals were exposed to.
The possibility that these two investigations might be linked is clearly a line of inquiry for us.