Female teacher who murdered a girl still wears an oxygen mask... Police say ”Interrogation is difficult” = South Korea

It has been revealed that the female teacher who murdered the late Kim Ha Nul was searching for articles about the murder on the day of the crime. The teacher was still wearing an oxygen mask, and the police were not conducting a proper investigation.
The Daejeon National Police Agency's special investigation team has confirmed that the suspect, who killed the girl, had searched online for previous murder cases before going outside the school gates to buy a weapon on the day of the crime.
On the 18th, the police announced that they had confirmed some of the steps taken to prepare for the crime through several online searches, including searching for articles about the crime and the murder weapon (crime tools).
The investigation team has obtained information on the preparation process of the crime tools used by suspect A, statements from related parties, and phone call records, and is focusing on whether the crime was planned.
Police plan to focus on uncovering the motive for the crime based on the information they have collected so far. In particular, profilers are investigating the crime scene and isolating suspect A.
They are also investigating whether the motive for the crime may be related to changes in his state of mind or psychological pressure.
We analyzed the records and confirmed that it was a planned crime. We thoroughly investigated all the factors that could affect the motive of the crime through hospital records, family, colleagues, friends, etc.
"We plan to investigate the matter," he said. Police have completed forensic investigations of suspect A's personal mobile phone, one home computer, and three school computers, and are currently investigating the electronic devices.
The police are currently collecting information from the suspect and analyzing the correlation between the events before and after the crime. As suspect A is currently resting in the intensive care unit after surgery, a face-to-face interrogation has been delayed.
After the crime, suspect A, who attempted suicide, underwent vein suture surgery. Police attempted to interrogate him face-to-face last week, but the investigation was halted due to his high blood pressure. He is currently wearing an oxygen mask, so it is difficult to meet with him.
The source said, "Because suspect A is still wearing an oxygen mask, it is taking time to interrogate him face-to-face. We plan to keep an eye on his condition."