Mumbai Banking system liquidity fell to the lowest level since June 29, latest data from the Reserve Bank of India (RBI) showed. The deficit is due to a pick-up in credit growth and likely intervention by the central bank in the foreign exchange market, economists said. System liquidity was in a deficit of ₹2,884 crore on Wednesday. On June 29, it was in a deficit of ₹13,076 crore. Intervention by the RBI is expected to further fuel the deficit in coming days, the economists said.