Wando: A Chinese national was booked Monday on charges of accidentally causing a fire at a cold storage warehouse in the southwestern county of Wando last week, which killed two firefighters, police said.

According to Yonhap News Agency, the suspect, who was booked without detention, is suspected of causing the fire while using a torch to remove epoxy flooring, a highly flammable substance, as part of floor-leveling and repaving work. The incident has raised concerns about adherence to safety protocols in the workplace.

The suspect was reportedly working alone, which officials believe constitutes a violation of safety protocol that mandates a two-person team when conducting fire-related work. This breach of protocol is being closely examined as part of the ongoing investigation into the tragic accident.

Adding to the complexity of the case, the suspect's manager, who was not present at the site, was the first person to report the blaze, according to officials. This has led authorities to investigate whether the manager can also be held accountable for the violation of safety protocols.

Police have determined that the Chinese national is clearly at fault for using heating equipment, which is strictly restricted during work involving flammable materials like epoxy. As the investigation continues, authorities are reviewing the extent of the manager's responsibility in the incident.