In the run up to the 'Brexit' referendum tomorrow, the Reserve Bank of India has said that it is keeping a close watch on all the developments. In a statement issued from Mumbai today, RBI said it will take all necessary steps including liquidity support to ensure orderly conditions in the financial markets.There has been some turbulence in global financial markets, including India ahead of the referendum in the United Kingdom on its continuing in the 28-nation European Union. Britain's exit from the EU, or Brexit, could have implications for the international financial markets and exchange rates.Meanwhile, the Indian markets have ended in the red. The benchmark index at the Bombay Stock Exchange lost 47 points to close at 26,766 while Nifty ended at 8,204; lower by 16 points.