Prices of sugar fell in key wholesale markets of the country amid increased selling pressure on mills. Prices of medium-grade sugar were down by 5 rupees per 100 kg each in the markets of Delhi and Muzaffar nagar, while they were 10 rupees per 100 kg lower in Mumbai and Kolhapur. Millers quoted lower prices as there was no demand at current price levels and mills have to adhere to stock limits.