In a tragedy that has sent shockwaves through France , four-year-old Kassim Benouali, and his younger brother Sadek, two, died from a cardiac arrest after they were left in the car.

The two children were found unresponsive in the family car on their home driveway in Carpentras, southern France, by their mother, with a manslaughter investigation opened

A three-year-old has been found dead in a car in the Paris region, a police source said on Thursday, the third such fatality of a child during the extreme weather this week.