A Chinese mother whose daughter died after being attacked by a Chinese man in Tokyo, is seeking the death penalty for the suspect, a month before the case will be heard in a Japanese court.

Jiang Qiulian, the mother of Jiang Ge, 24, who was found dead with multiple stab wounds in the corridor of her Tokyo apartment on Nov 3 last year, said in her micro blog that she went to Japan on Nov 4 with the aim of building public support for the death penalty for the suspect, Chen Shifeng.

Four activities to drum up support were held in Tokyo's Ikebukuro district on Saturday and Sunday, while an online petition to collect signatures - set to end on Nov 30 - continues, according to her post on Thursday.