A prominent Japanese author and columnist who advised the government has called for Japan to adopt a system to force immigrant workers to live in separate zones based on race.

In a regular column published in the Feb. 11 edition of the conservative daily Sankei Shimbun, Ayako Sono said immigrants, especially those providing elderly care, would ease the difficulties in Japan's nursing sector.

She also said that, while it was fine for people of all races to work, do research, and socialize with each other, they should also live apart from each other. "Since learning about the situation in South Africa 20 or 30 years ago, I've come to think that whites, Asians, and blacks should live separately," Sono wrote.