A suspect, a 71-year-old woman surnamed Yoo, set fire to the apartment management office in Gyeongsan City, North Gyeongsang Province on the 23rd, injuring eight people including herself. One woman in her 50s who was receiving treatment for her burns died, prompting police to change Yoo's charges to arson resulting in death. Police seized and searched Yoo's residence and vehicle on the 24th to secure evidence. They plan to investigate the circumstances of the incident, the motive behind the crime, and whether it was premeditated through analysis of the confiscated materials.