South Korea's indictment of the former Seoul bureau chief at the right-leaning daily Sankei Shimbun is being criticized by experts who say the move might represent an attack against a Japanese media outlet.

Japanese journalist Tatsuya Kato, 48, was indicted Wednesday on charges of defaming South Korean President Park Geun-hye after reporting on rumors about Park's whereabouts on the day of the Sewol ferry disaster in April, which killed around 300 people.

The article said that Park was with a man on that day.