The average yield on the 91-day bill fell to 19.080 percent from 19.131 at the last similar auction on August 6. The yield on the 266-day bill rose to 19.004 percent from 18.878 percent at the last auction.

Egypt's dollar liquidity has been improving since it floated its pound currency in November as part of a $12 billion International Monetary Fund programme aimed at boosting the economy.

Egypt's central bank said this month that foreign currency reserves jumped by $4.73 billion at the end of July to $36.04 billion, higher than before the 2011 uprising that drove away tourists and foreign investors, key sources of foreign currency.