A 21-year-old man stabbed a police officer to death at a police box and stole his gun in central Japan on Tuesday. The assailant then shot a security guard, who was later confirmed dead, at a nearby elementary school. Police shot and detained the suspect.

Police arrested a 44-year-old woman in western Japan on Wednesday on suspicion of murdering her younger brother, the president of a construction company, in a staged suicide. He was found dead from carbon monoxide poisoning in a toilet in March.