Police on Thursday served a Chinese man, currently on trial for robbery, with a new arrest warrant for his alleged role in the June murder of a family of four in Fukuoka.

Fukuoka Prefectural Police arrested Wei Wei, 24, a former student at a Japanese language school, on suspicion that he, together with two other Chinese, murdered 41-year-old clothes merchant Shinjiro Matsumoto, his wife, Chika, 40, son, Kai, 11, and daughter, Hina, 8, and subsequently dumped their handcuffed bodies into Hakata Bay, investigation sources said.

He was arrested in Japan in August and is currently on trial for robbery.