A senior Chinese diplomat says Beijing plans to brief Japan on the outcome of an investigation into the fatal stabbing of a 10-year-old student who attended a Japanese school in China.

The director-general of the Japanese Foreign Ministry's Consular Affairs Bureau, Iwamoto Keiichi, met Chinese Vice Foreign Minister Deng Li in Beijing on Thursday. Friday marks a month since the assault in the southern city of Shenzhen.

Iwamoto asked China to thoroughly probe the attack to help prevent a recurrence. He also sought crackdowns on unsubstantiated and malicious anti-Japan posts on social media.

The Chinese side expressed its plan to look into the assault through judicial procedures and provide an explanation to Japan in an appropriate way, the Japanese Foreign Ministry said. It also outlined its intention to take particular care to address possibly illegal social media posts.

Officials at Japanese schools across China have been ramping up security in cooperation with local authorities.

But Japanese nationals in China remain concerned about their safety due to a lack of explanation about the attack.