Two women in central Japan died after they were stabbed by a man at a bar in Hamamatsu, Shizuoka prefecture, early on July 6.
The victims were bar manager Tomoka Takeuchi, 27, and Ms Rin Ito, 26, an employee.
The police arrested Ichiro Yamashita, 41, at the scene. He said he is unemployed and the police are investigating his motive and the relationship among the three.An emergency call was made at about 1.55am on July 6, stating that a man stabbed two women with a knife.
According to firefighters and others, the victims were unconscious and in a critical condition when they were taken to hospital.
Yamashita is believed to be a regular customer of the so-called girls bar, where female employees serve drinks.
