The attack on the 10-year-old boy was the second such incident in months amid a social-media campaign that has stirred up anti-Japan sentiment in China.

A 10-year-old boy attending a Japanese school in southern China has died after being stabbed on his way to class on Wednesday, according to Tokyo’s foreign minister, in the second knife attack near a Japanese school in the country in recent months.

A 44-year-old man was in custody, the police said, after the child was attacked Wednesday. Other Japanese schools in China urged caution.