Foreigner causes trouble on Korean Air flight by ”sitting in the flight attendant's seat”... The situation at the time = Korea

A foreign passenger on a Korean Air flight from Bangkok, Thailand to Incheon Airport in South Korea made a fuss when he tried to sit in the emergency exit seat of a flight attendant and was handed over to the police.
According to Korean Air, a foreign male passenger, passenger A, caused a disturbance on board flight KE658, which departed from Bangkok Suvarnabhumi Airport on the 7th and arrived at Incheon Airport at around 4:45 a.m. on the 8th.
Passenger A caused a disturbance and was subdued by the flight crew and passengers. While the aircraft was in operation, Passenger A sat in the crew seat near the emergency exit without permission, and shouted and threatened the flight crew who tried to stop him, violating air safety standards.
The passenger continued to violate the law. In a video posted on social media by a passenger who was at the scene at the time, when the flight attendants asked Passenger A to return to his seat, Passenger A made a gesture as if he was touching the emergency door.
The chief purser and the flight attendants repeatedly informed Passenger A that he was violating the Aviation Security Act, and took measures to restrain Passenger A, such as restraining and separating him, based on the captain's instructions. In addition, another passenger
The plane was carrying 238 passengers, none of whom were injured in the incident.
After the plane landed, Passenger A, who was handed over to the Incheon Airport Police, was found to have made a statement to the effect that he "didn't remember."
The police have requested a urine test on Passenger A to investigate whether he had used drugs, and have charged him with violating the Aviation Security Act.
Violation of the Aviation Security Act is punishable by imprisonment of up to three years or a fine of up to 30 million won (approximately 3 million yen).