The Federal Reserve Vice Chairman Stanley Fischer said in an interview on Thursday that he expects the U.S. economy to grow despite the "poor" first quarter.

Fischer noted that the Fed will try to hike its interest rate "at the best possible time". He added that the central bank is likely to raise its interest rate this year but the timing would depend on economic data.

The Fed vice chairman also said that the Eurozone's economy improved as the European Central Bank launched its asset-buying programme.