The document branded the incident "an assault on United Kingdom sovereignty", adding it came in violation of the Chemical Weapons Convention (CWC) and worldwide law.
Lavrov suggested that the poisoning might have motivated by a desire to complicate Russia's hosting of this summer's soccer World Cup.
Speaking at the UN Security Council on Wednesday, Haley said the U.S. agreed with the British government's assessment that Russian agents had used deadly chemicals in an attempt to kill 66-year-old Sergei Skripal and his daughter Yulia in Salisbury last week. Both remain hospitalized in serious condition after they were found slumped on a bench in the city of Salisbury in southern England.
Separately, Washington on Thursday slapped sanctions on two of Russia's biggest intelligence agencies, the Federal Security Service (FSB) and the GRU military intelligence service, in response to Russian meddling in the 2016 presidential election and malicious cyber attacks.
US Special Counsel Robert Mueller demanded documents directly related to President Trump's businesses.
The UK took its action after Moscow refused to explain how a Russian-made nerve agent was used on a former spy and his daughter in the UK. In a statement, the Foreign Ministry said that "Israel views with gravity the event which took place in Great Britain and condemns it vigorously".
"Russia's likely involvement is absolutely unacceptable and needs to be condemned in the strongest terms", he said.
British officials say they were poisoned with a Soviet-era nerve agent and have expelled Russian diplomats from the country in response.
More: Ex-double agent poisoned.
Russian Federation has criticised Britain's raft of punitive measures against it over the poisoning of a former double agent and his daughter as "absolutely irresponsible".
CCTV image of Sergei Skripal buying groceries at the Bargain Stop convenience store in Salisbury on February 27, 2018.
Putin's spokesman repeated the Russian claim that the "accusations are unsubstantiated".
Statement comes as North Atlantic Treaty Organisation meets to discuss the crisis.
"President Macron denounced as early as Tuesday the Salisbury chemical attack as unacceptable and assured Prime Minister May the United Kingdom had France's full support", the embassy said.
The UK's deputy United Nations ambassador, Jonathan Allen, told the Security Council that the worldwide watchdog for chemical weapons has been called on investigate British analysis of the attack.
Russian Federation is expected to take retaliatory measures soon.