Police have launched a robbery and murder investigation after one man was stabbed to death and three others were assaulted and robbed Monday night on streets in Kashiwa, Chiba Prefecture, police said Tuesday.

A man thought to be in his 30s was stabbed with a knife or similar object at around 11:35 p.m. The victim, who had not been identified as of Tuesday, was confirmed dead from multiple stab wounds to the neck and back soon after being transported to a hospital.

The police said several business cards were scattered around the site, but the victim's wallet was not found.