Mysterious graffiti in 150 locations in Yongsan, Seoul... The word ``bruxism''

``bruxism'' (teeth grinding), ``bruxism'' (American medical term for bruxism)... There are approximately 150 locations like this, including public places and private land, throughout Seoul and Yongsan-gu.
An American man in his 30s who painted graffiti is being investigated by police on suspicion of damaging property. According to the police on the 27th, the Yongsan Police Station was able to remove store shutters, residential gates, garbage cans, overpasses, and telephone poles in the Yongsan area.
An American suspect, A, who wrote graffiti in 155 locations, was arrested on charges including damage to property. Suspect A entered the country in October 2023 for sightseeing and used special pens and lacquer spray in the Yongsan area.
He has been graffitiing words such as "bruxism," "bruxism," and "brux." Suspect A entered the country in October 2022 and committed a similar crime, after which he ``gnashed his teeth'' on SNS etc.
It was discovered that he had taken and posted photos and videos of graffiti. Residents felt uneasy as graffiti continued to increase, and there were rumors that it might be a sign of terrorism.
Police received a report of graffiti on the 25th of last month and traced the suspect's movement, identified and arrested Suspect A. Currently, we have taken steps to suspend the departure of Suspect A and have applied for a arrest warrant.
It's the situation. During the police investigation, Suspect A was reported to have claimed that ``his act was a type of graffiti art, an artistic act.''
Graffiti is the creation of pictures, signs, etc. in public places using lacquer spray, etc.
It means the artistic act of leaving behind. Suspect A was also reported to have made a statement to the effect that ``bruxism is a more serious disease than I thought, and I wanted to let people know.''