Whenever new technology emerges, it's only a matter of time before someone abuses it – something that visitors to a nude sauna in Bern, Switzerland have found out the hard way. Guests at the spa and water park in the Swiss capital, which features a nude 'relaxation' area, recently reported a drone hovering around the area – and this isn't the first time that such an incident has happened.

Andrea Bauer, a spokeswoman for Bernaqua waterpark owner Migros-Aar, told Swiss news website 20 Minuten that the drone had been spotted above the sauna, where visitors "are naked or wearing very few clothes" on numerous of occasions over the past few days.

The water park has now reported the incident to the police. It's not known whether the peeping drone had a camera attached to it, although, let's be honest here, it seems likely.

The voyeuristic drone owner is set to find themselves in hot water once caught, as it's illegal in Switzerland to fly a drone over crowds of people without a permit and proper authorisation.

Baur told 20 Minuten that the spa and water park, which is located on the outskirts of Bern and features women-only and unisex nudist saunas – experienced a similar drone incident in 2015, the owner of which was eventually caught.

"We will not tolerate such actions not at all," Bauer told the publication. "Privacy is important to our guests and a sensitive issue."

It's the second report of a drone catching people with their trousers down in the space of two days: on Wednesday (29 June 2016) a drone operator in Russia spotted an amorous couple in a compromising position in the bell tower of a monastery in Torzhok, Russia.