"Fox News Sunday" anchor Chris Wallace asked Putin to comment on the United Kingdom investigation into poisoning incidents in Amesbury and Salisbury, According to Wallance, Amesbury incident victims picked up a bottle that was used in the attack on former intelligence officer Sergei Skripal and his daughter Yulia in Salisbury. They say that many of these could also be contaminated by Novichok.
An Aeroflot flight at Heathrow airport in London was searched on March 30, an action the British government described at the time as "routine".
British officials declined to comment. "A lot of versions have been appearing in the newspapers, they are not supported by the statements of the Foreign Office", he said.
Meanwhile, Mr Hope has said it could be "weeks or even months" before his mother can be buried - and claimed police told him that her body is now "property of the Crown". Security Minister Ben Wallace wrote on Twitter that he considered the news about suspects to be "ill-informed" and speculative.
Earlier this month, Dawn Sturgess, 44, died after being poisoned by the same nerve agent, in Amesbury.
The nerve agent was present in a bottle found at the Amesbury home of her partner Charlie Rowley, 45, who remains in critical condition in hospital.
Previously Matthew Rowley stated that poison the Newcomer that had poisoned his brother with a friend that was in the bottle of perfume.
An inquest into the death of Dawn Sturgess is due to open on Thursday.
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Russian Federation has denied poisoning the Skripals, sparking a diplomatic row that has led to tit-for-tat diplomatic expulsions between Britain and its allies and Russian Federation.
Russian Federation retaliated by expelling Western diplomats.
The Skripals were found slumped on a bench at a shopping center in Salisbury, in southern England, on March 4.
The U.K. has blamed Russian Federation for the attack, a charge that the Kremlin has strongly denied.
President Vladimir Putin accused Britain of making baseless allegations against Russian Federation after a former Soviet spy was among four people found poisoned by a nerve agent in southern England. Police believe they came into contact with the substance via the door handle of Sergei Skripal's house.
British authorities believe Sturgess and Rowley were not directly targeted.
Experts from the Organisation for the Prohibition of Chemical Weapons have been requested to assist in the investigation.