The police have determined that Kim Ga-eul, who has been missing for ten days after disappearing near Gayang Station on Seoul Subway Line 9, left a document in Korean, believed to be a suicide note, on her tablet PC. 

The police are also known to have secured a bus black box that took a picture of Kim standing at the southern end of the Gayang Bridge on the 27th of last month, the day of his disappearance. 

With all possibilities in mind, the police are searching the banks of the Han River twice a day.