A teenage Japanese boy has been arrested after walking into a police station carrying a severed human head and claiming to have killed his mother.
The 17-year-old went to a police station in the town of Aizuwakamatsu, north of Tokyo, carrying the head in a sports bag, Japanese media said.
The beheaded body of a woman was later found at the boy's home, police said.
This is the latest in a series of grisly killings in Japan, a country renowned for its low crime rate.
On Monday a severed human leg was discovered in a small river in central Tokyo.
In January, a 32-year-old woman was arrested after she confessed to killing her husband, dismembering him with a saw and dumping body parts around Tokyo.