Dozens more people are injured in the explosion outside a kindergarten in eastern Jiangsu province. State media reports it could've been caused by gas leak.At least 66 people were also wounded in the explosion.It was not clear whether the explosion was an accident or was deliberately set.
It is the latest tragedy to strike a nursery in China in recent weeks. A school bus packed with nursery pupils erupted in flames inside a tunnel in eastern Shandong province on May 9, killing 11 children, a teacher and the driver.
Officials later said the fire was intentionally set by the driver, who was angry at losing overtime wages.
In 2010, nearly 20 children were killed in attacks on schools, prompting a response from top government officials and leading many schools to beef up security with the posting of guards and the installation of gates and other barriers. Last year, a knife-wielding assailant injured seven students outside a primary school in a northern city.