MOSCOW (AP) — Russia's foreign minister says Moscow has received a document from a Swiss lab that analyzed the samples in the nerve agent poisoning of an ex-Russian spy, which points at a Western-designed nerve agent as a likely cause.

Sergey Lavrov said Saturday that Moscow received the confidential information from the laboratory in Spiez, Switzerland, that analyzed samples from the site of the March 4 poisoning of Sergei Skripal and his daughter in the English city of Salisbury.

He said the analysis was done at the request of the Organization for the Prohibition of Chemical Weapons.

The OPCW's report confirmed British findings that the Skripals were poisoned with a military-grade nerve agent, but didn't say who was responsible.

Britain has accused Russia of poisoning them with a Soviet-designed agent, an accusation that Moscow denies.