After a 10-year-old Japanese boy was stabbed to death by a man in China, tensions between the two countries are rising.

Japan’s top diplomat asked China to ensure the safety of Japanese citizens there after the fatal stabbing of a Japanese schoolboy, and demanded a crackdown on what she called “groundless, malicious and anti-Japanese” social media posts that threaten children's safety.

A 10-year-old Japanese boy was fatally stabbed on his way to school in Shenzhen, China, on Wednesday, coinciding with the anniversary of Japan’s 1931 invasion of Manchuria. This is the second such attack in recent months,