Middle school student who killed his mother and claimed to be a "difficult boy" has been sentenced to 20 years in prison.

ⓒYonhap News Agency

A middle school student who killed his mother with a weapon and claimed to be a "crime boy" has been sentenced to 20 years in prison.

According to the legal community on the 4th, the Supreme Court's third division (Chief Justice Um Sang-pil) sentenced A (15) to 20 years in prison, as in the original trial, on charges of perpetual murder and attachment orders.

Mr. A is accused of wielding a weapon to his mother, B (47), who was scolding him at an apartment in Sangdang-gu, Cheongju, last Chuseok.

At that time, A was annoyed that the sound from my playground was loud. In response, his mother B soothed A, saying, "I'm here to play because it's a holiday, and it happens sometimes," but A visited the Cheongju Sangdang Police Station in Chungcheongbuk-do and reported the noise.

Later, when B, who heard the fact, scolded him for "not being considerate of others and claiming only your rights," A, who was enraged, stabbed B more than 20 times with his usual weapon and killed him.

In the first trial, which was conducted as a public participation trial in accordance with A's wish, A was sentenced to 20 years in prison and 15 years of attachment of a location tracking electronic device. All nine jurors unanimously found A guilty, with eight of the jurors giving a 20-year prison sentence and the other one giving a short seven-year sentence of 15 years.

A claimed, "At the time of the crime, he was in a state of mental and physical loss or mental weakness due to mental illness," but the court refused, saying, "We could not confirm the evidence to the extent that it was recognized as mental and physical loss or mental weakness."

Reporter Lee Yu Na from Digital News Team.