Swiss authorities have searched multiple premises in relation to an investigation into allegations that hackers - presumably working for Israel - had targeted venues which hosted international negotiations on Iran's nuclear program, Attorney General Michael Lauber said on Wednesday.
"We have an open investigation into political espionage in Switzerland," Lauber told a news conference.
His office was analyzing data acquired during the searches, he said. An aide said the premises searched were hotels.
Russian computer security company Kaspersky Lab said earlier this month a computer virus used by Israeli intelligence had been used to hack into hotels used to host talks between Iran and six world powers.
Jpost.com staff contributed to this story.