Police in Tokyo have arrested a 23-year-old Chinese student on weapons charges after his Chinese flatmate was found in their home with fatal stab wounds to the neck and abdomen on Friday night, according to Japanese media reports. The 20-year-old male victim, who was not named, died in hospital. Police officers called to the eighth-floor flat in northern Adachi ward on Friday evening found the man bleeding from wounds to his neck and abdomen, the Sankei newspaper reported. Preliminary investigations showed the victim was a vocational student who moved into the flat three months ago, Chinese state-run news portal Huanqiu.com reported. Police searched the area and found the flatmate, surnamed Liu, holding a sashimi knife with blood on it. Liu told the police that he had stabbed his flatmate, the Sankei report said. Liu was quoted as saying that he had had “conflicts of personality” with his flatmate and they did not have a “good relationship”. Police said an autopsy would be carried out to determine the exact cause of death. In November 2016, Jiang Ge, a 24-year-old postgraduate student from Qingdao, Shandong province, was stabbed to death by her roommate’s ex-boyfriend in her Tokyo flat after an argument with the man. The killing led to an outcry online as Jiang’s mother blamed the roommate for locking her daughter out of their room while the assault took place in the corridor. Chen Shifeng, the 26-year-old ex-boyfriend, was convicted of murder and jailed for 20 years in December 2017 after the victim’s mother had collected 4.5 million signatures online from China and elsewhere demanding that he face the death penalty, People.cn reported.