Russia says it "had no connection" to the nerve agent that was used to poison a former Russian spy and his daughter.
Sergei Skripal — a former Russian intelligence officer who gave information to British intelligence agency MI6 — and his daughter Yulia were found unconscious at a mall in Salisbury, England, on March 4. The Skripals are still in critical condition.
Russia's Foreign Minister Sergei Lavrov said Tuesday the country had requested access to the nerve agent used in the attack but was denied.
Lavrov said London should open the investigation up to Moscow, since Yulia is a Russian citizen.
His comments came after U.K. Prime Minister Theresa May said it is "highly likely" Russia was behind the attack. She gave the country until the end of the day Tuesday to explain whether Russia sponsored the attack or allowed some of its nerve agent to get into the wrong hands.
Russia has not officially responded to May's request yet.