Switzerland's Tages Anzeiger newspaper said Swiss, Dutch and British authorities had worked together to foil the plot directed at the Spiez laboratory near Bern, where experts in nuclear, biological and chemical weapons work.
The Swiss confirmation came after Dutch newspaper NRC Handelsblad and Swiss newspaper Tages-Anzeiger reported that two Russians suspected of being agents of military intelligence service GRU were kicked out of the Netherlands earlier this year as a result of a Europe-wide investigation.
"The duo, according to sources within the investigation, carried equipment which they wanted to use to break into the computer network" of the Spiez laboratory.
Two Russian spies were arrested as they tried to spy on a Swiss lab where samples from the Salisbury novichok attack were tested, it has been claimed. "The exact date of the arrest of spies unknown", - stated in the message.
The Kremlin has given its support to the Assad regime in Syria while United Kingdom intelligence agencies believe Russian intelligence services are behind the Skripal attack. Beyond confirming the Swiss Federal Intelligence Service's collaboration, the AG's office did not elaborate further.More news: Border Patrol Agent Arrested in Texas in Connection With 4 Killings, Kidnapping
"We had several indications that there were some hacking attempts during the last few months", including attempts to plant malware that would spread to other labs, Andreas Bucher, a spokesman for the Spiez Laboratory, said by telephone.
The Swiss spy agency "actively participated in this operation in collaboration with its Dutch and British partners in prevention of illegal actions against critical Swiss infrastructure", she said.
"The Swiss authorities are aware of the case of Russian spies discovered in The Hague and expelled from the same place", FIS spokeswoman Isabelle Graber said in an e-mail to AP. A spokesperson said no data had been stolen.
The Dutch military intelligence agency MIVD did not immediately respond to requests for comment.
The same malware was used to attack the Winter Olympics in South Korea, he added.More news: Buckeyes edge TCU in neutral site thriller
Russia's SVR foreign intelligence service information head Sergei Ivanov also told the RIA Novosti state news agency that "the SVR does not comment on this information".
A Swiss laboratory likely involved in analyzing samples from a March chemical attack in Salisbury, England, has reportedly been targeted by Russian agents.
The two men are not the same suspects accused of carrying out the poisoning of the Skripals - Alexander Petrov and Ruslan Boshirov - who were charged on September 5.
Commenting on the latest reports, Lavrov said "I can not believe that such an event involving three European countries escaped the attention of the media", seemingly inferring that it did not happen.
The UK has accused Alexander Petrov and Ruslan Boshirov of a plot to poison former spy Sergei Skripal but they claim they were visiting Salisbury as tourists.More news: Mayors’ group voices support for Toronto in council-cutting fight against Ontario