CAIRO, March 20 (Reuters) - Average yields on Egypt's three-year and seven-year treasury bonds rose at an auction on Monday, data from the central bank showed.

Yields on the three-year bonds rose to an average of 17.204 percent from 17.097 percent at the most recent similar auction.

Yields on the seven-year bonds increased to 17.201 percent from 17.173 percent.

(Reporting by Amina Ismail; Editing by Gareth Jones) ((amina.ismail@thomsonreuters.com; +20 2 2394 8114;))