CAIRO- Average yields on Egypt's three-month and nine-month treasury bills fell at an auction on Sunday, data from the central bank showed.

The average yield on the 91-day bill slipped to 18.864 percent from 18.976 percent at the last similar auction and the yield on the 273-day bill fell to 18.535 percent from 18.661 percent.

Demand for Egypt's domestic debt has grown since the central bank raised key interest rates by 2 percentage points in July, its third increase since the country floated its currency in November last year.

(Reporting by Arwa Gaballa; Editing by Andrew Heavens) ((arwa.gaballa@thomsonreuters.com; +20 2 2578 3290;))

Keywords: EGYPT TREASURY/BILLS