A man fired what looked like a hunting rifle and locked himself up, killing four people. The wife of Sergeant Takuo Ikeuchi (4), who died, and his eldest son, who works as a police officer at the Nagano Prefectural Police Headquarters, spoke to NHK.

Shogo Ikeuchi: "I wanted to surpass my father, whom I admired, but it is painful when this happens. He was a strict father when I was little, but he was happy when I got the same job"