Three people were killed and 15 others injured in a knife attack at a suburban supermarket in Shanghai on Monday on the eve of China's week-long National Day holiday, the latest in a series of stabbing incidents in major Chinese cities this year.

Three children have been injured - one of them seriously - in a knife attack at a daycare centre in the Swiss city of Zurich. A spokesperson for the city's police force said a 23-year-old Chinese man attacked a group of children who were being led to the centre by a staff member.

Three people were killed and 15 injured in a knife attack at a Shanghai supermarket on Monday evening, just as the country gears up for its National Day holiday week. All of the victims were taken quickly to hospital,