CAIRO, March 27 (Reuters) - The average yields on Egypt's five-year and 10-year treasury bonds were mixed at an auction on Monday, data from the central bank showed.

The yield on the five-year bond rose slightly to 17.198 percent from 17.132 percent at the previous auction, while the yield on a 10-year bond fell slightly to 17.142 percent from 17.145 percent at the last auction.

(Reporting by Asma Alsharif; Editing by Hugh Lawson) ((eric.knecht@thomsonreuters.com; +20 2 2394 8102; Reuters Messaging: eric.knecht.thomsonreuters.com@reuters.net))