Family of female student murdered by teacher files lawsuit over malicious harassment...One person arrested for defamation (South Korea)

The family of Kim Ha Nul (8 years old at the time of death), who was murdered by a teacher with a deadly weapon at an elementary school in Daejeon, South Korea, has filed a police complaint against malicious commenters.
According to the Daejeon Metropolitan Police Agency on the 14th, Kim's side filed charges of defamation and slander against those who posted malicious comments about the family that day under the Information and Communications Network Act.
The commenters filed a complaint asking for punishment for defamation of the deceased. On the 12th of last month, the commenters posted malicious comments and messages on social media and online communities.
Police launched an investigation after receiving a report from Kim's family last month and arrested one person on suspicion of defamation. The remaining four are under investigation, with some of the identities of the former identified.
A police official said, "The crime of defamation of the deceased cannot be punished unless the family of the deceased files a lawsuit directly," and added, "As the complaint was filed today, we will immediately take action against all those who posted the defamatory comments."
Kim was found stabbed with a murder weapon in the audiovisual room on the second floor of an elementary school in Gwanghwamun-dong, Seobu, at around 6 p.m. on the 10th of last month, and was taken to the hospital where he later died.
The murderer, Myung Jae-wan, a teacher in his 40s, had self-inflicted wounds after the crime and had undergone vein suture surgery at a hospital. He was also wearing an oxygen respirator, so police investigations were not immediately carried out.
The police forced Myung to confess to the crime before the surgery, and then proceeded with their investigation by seizing and searching his cell phone and examining his hospital records.
The investigation revealed that on the day of the murder, Myung had searched the internet for crime props and searched for articles about past murders.
The police have referred the case to the prosecution, and it has been determined that Myeong suffered from "anger transference," a condition in which his family discord, work life, and self-dissatisfaction, anger, and stress were expressed externally.
The results of the investigation were published to the effect that the situation was "