The Bank of Japan (BoJ) Governor Haruhiko Kuroda said in a press conference on Friday that the central bank's new stimulus measures were only an adjustment of quantitative easing. New stimulus measures will help to ease the BoJ's further if needed, he added.

"We've taken steps to supplement QQE [quantitative and qualitative easing] so that we can expand the program without hesitation if needed," Kuroda noted.

He pointed out that new stimulus measures do not address downside risks to the economy.

The BoJ governor also said that the Fed's interest rate hike was not a trigger for new stimulus measures.