Police at the scene where counter-terrorism officers are investigating after a couple were left in a critical condition, in Amesbury, England, Thursday, July 5, 2018.
"This is happening during a quite strong, positive, emotional wave from British fans who have come to Russian Federation to support their team during the World Cup", Zheleznyak said.
But the exposure of two British citizens to such a unsafe nerve agent will stoke fears that Novichok could be lingering at sites around the ancient English city of Salisbury.
The incident began to unfold on Saturday, when paramedics were called to the couple's home after Ms Sturgess appeared to have a seizure, foaming at the mouth and eventually collapsing.
Alastair Hay, Professor Emeritus of Environmental Toxicology at the University of Leeds, said there is "no specific method for the detection of Novichoks in the environment" because the use of the nerve agent was not considered likely when monitors were designed.
He added: "The eyes of the world are now only Russian Federation, not least because of the Word Cup".
The Skripals eventually recovered after treatment, but not before the British government lead the charge for a major diplomatic pushback against Russian Federation for orchestrating the attack-something Moscow continues to deny.
Mr Javid called on Russian Federation to explain "exactly what has gone on", adding: "We will stand up to the actions that threaten our security".
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A frustrating night for the Brazil striker was brought to a premature end soon afterwards, as he was replaced by Douglas Costa. And a lot of that was down to a wonderful save from Thibaut Courtois in injury-time from a superbly hit shot from Neymar .
A man and woman in their 40s were in critical condition on Thursday (Friday NZT) at a hospital in southwest England after they fell ill on Saturday (Sunday NZT) near Salisbury, a city not far from Britain's iconic Stonehenge monument. The people affected are not officially named by police, who still believe they have fallen victim to a contaminated batch of drugs - "possibly heroin or crack cocaine".
"As part of this, detectives have been making a number of enquiries to trace the precise movements of the man and woman in the period prior to them falling ill". He said: "It is completely unacceptable for our people to be either deliberate or accidental targets, or for our streets, our parks, our towns, to be dumping grounds for poison".
Officers are wearing protective equipment as they carry out their investigation.
Officials said there was only a "low risk" to the wider public, but urged anyone who had visited the affected sites to wash their clothes and wipe down personal items.
While authorities aren't ready to link this incident to the one from earlier this year, British home secretary Sajid Javid said, "That is clearly the main line of inquiry".
- Prime Minister Theresa May declared Salisbury is "very much open for business" after residents raised fears that the new case will hamper the local economy.
At 6.20pm South West Ambulance Service are called back to the address on Muggleton Road and Mr Rowley is also taken to hospital.
- The UK reported the incident to the Organisation for the Prohibition of Chemical Weapons.