A Japanese schoolgirl has been arrested on suspicion of murdering and dismembering her classmate.
Police said the 15-year-old used a metal instrument to beat the girl, also aged 15, before strangling her.
She then cut off the victim's head and left hand, the Kyodo news agency reported.
Her body was reportedly found on a bed in the apartment of the suspect, who lived alone.
Investigators said the teenager, who was arrested in Sasebo city on Saturday, told officers: "I did it all by myself".