A sample of the nerve agent
is to be sent for analysis to the Organisation for the Prohibition of Chemical Weapons, the independent international body set up to stop chemical warfare.
Mr Johnson said Russia had "chosen this nerve agent
to show people" who might think of defecting that "Russia will take revenge.
She said they had been poisoned with a nerve agent
of the Novichok group of chemicals, developed in the Soviet Union.
The only possible conclusion was that the Russian state was behind the attempted murder of the Skripals and the harm that befell Nick Bailey, a police officer who is in a serious condition after being exposed to the nerve agent
, May said.
Hundreds of British citizens have been potentially exposed to this nerve agent
in what was an indiscriminate and reckless act against the United Kingdom.
While the secretary-general is not in a position to attribute responsibility, he strongly condemns the use of any nerve agent
or chemical weapons and hopes the incident will be thoroughly investigated," Haq told reporters.
In a dramatic statement after a meeting of the National Security Council, during which she received the latest intelligence analysis and an update on the investigation, Mrs May told MPs: "It is now clear that Mr Skripal and his daughter were poisoned with a military-grade nerve agent
of a type developed by Russia.
One chemical weapons expert said last night that Novichok was delivered in powder form and -- unlike other nerve agents
-- its effects are delayed after exposure.
She said the pair were targeted with a nerve agent
in Salisbury, Wiltshire, traceable to a Russian military lab.
LONDON: British Prime Minister Theresa May said Monday that it was "highly likely" that Moscow was responsible for the poisoning in England of former Russian double agent Sergei Skripal and his daughter using a military-grade nerve agent
The nerve agent
itself will eventually be metabolised and excreted.
Treatment includes giving atropine for as long as there is nerve agent
present and another antidote called oxime.