"We have paid attention to the article in the Tages-Anzeiger newspaper… We consider any such speculations simply absurd and they can only be qualified as another attempt to fuel Russophobic sentiments," the embassy said in a tweet then retweeted by the Russian Foreign Ministry.
At the same time, Isabelle Graber, chief spokesperson of the Swiss Federal Intelligence Service (FIS) said that the FIS took part in the operation against the alleged Russian spies, who tried to spy on the Swiss Spiez laboratory.
"The Swiss authorities are aware of the case of Russian spies discovered in The Hague and expelled from the same place. The Swiss Federal Intelligence Service (FIS) participated actively in this operation together with its Dutch and British partners. The FIS has thus contributed to the prevention of illegal actions against a critical Swiss infrastructure," Graber said.
The Russian Foreign Intelligence Service (SVR) has declined to comment on the reports. The laboratory in question has also declined to comment on the publication.
The media alleged that the suspects had tried to spy on the Spiez laboratory near Bern, engaged in nuclear, biological and chemical research, but their plot was foiled by the joint work of Swiss, Dutch and the UK intelligence.
The newspaper noted that the laboratory has been analyzing the poisonous substance used in Syria and the nerve agent used to poison the Skripals in March.