A hospital worker, Mr. A, collapsed in the restroom at a university hospital in Gangwon Province. He showed symptoms of cardiac arrest but has since regained consciousness. Police suspect that Mr. A may have stolen and ingested medical narcotics, leading to his collapse. They plan to send Mr. A's biological samples to the National Forensic Service for analysis to determine the exact drug composition. Based on the analysis results and Mr. A's health condition, police will investigate whether he actually ingested drugs and how he obtained them.