Most Asian stock indices closed lower as investors are awaiting the European Central Bank's interest rate decision. The ECB will released its interest rate decision today. Investors speculate that the European Central Bank will add further stimulus measures.

The Bank of Japan (BoJ) released its interest rate decision today. The BoJ kept its monetary policy unchanged. The BoJ said it will expand the monetary base at an annual pace of about ¥60 to ¥70 trillion. Japan's central bank added that it will continue with its quantitative and qualitative easing to achieve the 2% inflation target.

Indexes on the close:

Nikkei 225 15,676.18 -52.17 -0.33%

Hang Seng 25,297.92 -20.03 -0.08%

Shanghai Composite 2,306.86 +18.23 +0.80%