The Bank of Japan said Tuesday it had reappointed its executive director in charge of overseeing policy to a second four-year term.

Masayoshi Amamiya, widely seen as a key architect behind Gov. Haruhiko Kuroda's introduction in April 2013 of "quantitative and qualitative monetary easing" to revive the economy with a 2 percent inflation goal, was reappointed by Finance Minister Taro Aso.

The reappointment of Amamiya, who previously served at a division in charge of drafting monetary policy, is the second such decision after the current Bank of Japan Act was enforced in 1998, the central bank said.

Hiroshi Nakaso, currently one of the two deputy governors, was reappointed as executive director for international affairs in November 2012.