Authorities searching for man in his 70s who set fire to two buildings in Yeoksam-dong, Seoul

Regarding the large-scale fire that occurred in Gangnam, Seoul, police are tracking a man in his 70s as a primary suspect.
The man is suspected of entering the 4th floor of a building in Yeoksam-dong, Seoul, around 1:10 PM today, spraying a substance presumed to be a volatile liquid, committing arson, and fleeing the scene.
https://www.ytn.co.kr/_ln/0103_202610201628247224
I heard he has been apprehended.