MUMBAI: The US central bank's hawkish stance on rates left investors jittery as prospects of future rate hikes rose, pulling the sensex down by 571 points on Thursday to 66,230. In three sessions, the index haslost about 1,600 points after gaining over 3,000 points in 11 consecutive sessions.On NSE, the Nifty lost 159 points to close at 19,742.On Wednesday night, after the US Federal Reserve's rate setting committee let the interest rates be unchanged, chairman Jerome Powell left the door open for further rate hikes if the relevant...