Geneva firefighters have been tacking a series of blazes overnight on the Rue de Carouge.
Three fires started in cellars in apartment buildings. Residents were forced out of their homes as smoke filled apartments.
The fire department says three cellars have been destroyed. It took a team of 35 and 12 fire engines to bring the fires under control.
An investigation into what caused the fires is now underway.
A series of arson attacks blighted the area in 2011.
June one of the hottest on records
Switzerland has just lived through its third-hottest June since records began in 1864.
Storms hit central areas
Severe storms swept across central parts of the country last night, forcing Linkin Park to pause their Letzigrund stadium concert in Zurich for about 50 minutes.
Heat related hospital visits surge
Emergency calls to Geneva's 144 medical hotline rose about 60% over four days as last week's heatwave pushed temperatures to 37.
Storms destroy Geneva crops
The damage caused by the storm on Monday evening in Geneva is becoming clear.
Physical punishment for kids banned from today
Physical punishment of children is banned from today.
Gap grows between the wealthy and middle class
The gap between Switzerland's wealthy and its middle class widened again last year, according to UBS's annual global wealth report.
