A man has been injured while battling a blaze in Servette in Geneva, but his actions have been praised by firefighters.
He burnt his hand attempting to fight the fire with an extinguisher, his actions were described as crucial in the stopping the spread.
Emergency services soon had it under control.
The work is designed to fix a design flaw in the buildings which forced their evacuations three years ago.
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
