"While not as much as other countries, Japan's consumer prices have risen sharply. This increase is driven mostly by rising imported goods prices," Noguchi said in a speech to business leaders in Akita, northern Japan.

"What's more important in deciding monetary policy is trend inflation based on domestic macro-economic factors, which remains at low levels," he said.

(Reporting by Leika Kihara; Editing by Shri Navaratnam)