U.N. High Commissioner for Refugees Filippo Grandi has said that Japan's approval rate for refugees is "quite low," calling for improvement in the nation's treatment of asylum-seekers, including the practice of detaining such individuals while their cases are being examined.

"I think that Japan can do better in terms of resettlement," Grandi said Friday at the Japan National Press Club in Tokyo.

He said that while Japan's resettlement quota for refugees increased to 60 per year, the approval rate for asylum-seekers remains "quite low compared to other industrialized countries" and the criteria are "quite restricted."