High school teacher in his 50s arrested for lewd acts on subway line 6 = Seoul, South Korea

A high school teacher in Seoul, South Korea, was caught by the police after committing a lewd act on a subway train. Seoul's Mapo Police Station reported that on the 25th of this month, around 8:50 p.m., a man was raped in a lewd manner on a subway train.
It was announced on the 26th that a case was filed against Mr. A, a man in his 50s, on suspicion of committing the act (public indecency). Mr. A did things like take down his pants while looking at his cell phone on the Seoul subway line 6 train.
He is suspected of having committed a crime. It was confirmed that Mr. A was currently a high school teacher and was returning home in a drunken state at the time of the crime. While the police are investigating Mr. A's exact motive for the crime, they are also investigating the matter at his school.
The plan is to notify the truth.