Police seized computer tablets, mobile telephones and lists of names and telephone numbers of 50,000 persons
TokyoReporter
'I'll kill you. I'll set fire to your house," the suspect reportedly threatened the woman
Police suspect Sumiyoshi-kai member is the leader of the ring
Body was clothed in a gray long-sleeve shirt and black skirt, police said
Suspect told police, 'After we started jostling, I stabbed him in the abdomen'
Security camera footage showed the suspect following the victim for 30 minutes, police said
Victim was confirmed dead upon arrival at a hospital, police said
Victim suffered injuries that required 20 days to heal, police said
Kazuhiro Uematsu was found bleeding profusely from stab wounds to the head in front in his residence by his wife by February 22
Staff member at the Kawasaki branch of Yokohama Customs discovered the contraband concealed in a box of headphones