The prices of government securities fell by 30-40 paise across maturities since the market is anticipating liquidity tightening measures from the RBI. The yield on the 10-year benchmark paper closed at 8.15 per cent . The liquidity remained tight with the RBI infusing around Rs 24,000 crore from the market. The call rates ruled in the range of 8.50-8.75 per cent.The market is apprehending a auction announcement from the RBI for government borrowing programme.