The official Tokyo demanded the US to explain the information published by Wikileaks. This was said by Japan's Chief Cabinet Secretary Yoshihide Suga at a press conference, BBC reports.
On Friday, WikiLeaks published a series of secret NSA documents detailing US eavesdropping on 35 targets in Japan, including high-ranking officials, Sputnik News reports.
"If that [interception] is true, it is extremely regrettable for the allied countries," Suga said.