The Bank of Japan (BOJ) on Thursday opted to keep its aggressive monetary policy unchanged and maintained its view that the economy is expanding moderately.

The central bank's Policy Board at a two-day meeting concluding Thursday also decided to keep purchasing government bonds to maintain the 10-year yield, with long-term interests rates at close to zero percent.

The decision was made by an eight-to-one vote by the Policy Board.

The BOJ also maintained the 0.1 percent interest on some funds that financial institutions park at the central bank.