The suspect in September’s fatal stabbing of a Japanese boy in China has been formally arrested, according to media reports.

The 10-year-old student at a Japanese school in Shenzhen, southern China, was stabbed on his way to school and died about a day after the attack.

The suspect, a 44-year-old man surnamed Zhong, was apprehended at the scene and had been held during the investigation. Japanese media reported his arrest on Saturday, citing sources familiar with Japan-China relations.