The number of South Korean visitors to Japan plunged nearly 60 percent in September from a year earlier, following a 48.0 percent tumble in August, amid frayed ties over wartime history and trade policy, government data has shown.

The estimated number of South Korean tourists fell 58.1 percent to 201,200 in the reporting month, the sharpest drop since May 2011, when the figure plummeted 58.3 percent after the Great East Japan Earthquake on March 11 that year, the Japan Tourism Agency said Wednesday.

The overall number of foreign visitors rose 5.2 percent to 2,272,900, led by a 25.5 percent increase in Chinese tourists to 819,100, topping the list in terms of country and region.