Divers working near the Bains des Pâquis made a strange discovery - a World War One shell.
Police quickly evacuated the area for about 45 minutes while a bomb disposal team examined the object.
The shell turned out to be empty, and no one was injured.
Experts say we should not be surprised. Thousands of tonnes of munitions were dumped in the lake after the war, right up to the 1960s.
Swiss Post announce job cuts
Swiss Post will eliminate up to 110 positions in 2027, blaming shrinking letter volumes and fewer over-the-counter transactions
Autumn arrives in Switzerland
The heatwave that has gripped Switzerland since May finally breaks tomorrow
Driver warning in Vaud
Drivers in western Vaud face four nights of disruption on the A1 next week.
Mixed results in school classrooms
Swiss 15-year-olds still rank among the world's best in maths and science, but their performance in reading and maths is sliding
Good news for household bills
Swiss households will pay a little less for electricity next year
Fuel reserves now in use
Switzerland is dipping into its emergency fuel reserves for the first time this year to keep petrol and diesel flowing
