NAIROBI, Feb 14 (Reuters) - The weighted average yield on Kenya's benchmark 91-day Treasury bills fell to 8.213 percent at auction on Thursday from 8.229 percent last week, the central bank said.

The bank said it received bids worth 863 million shillings ($9.9 million) for the 4 billion shillings it had offered, representing a 22 percent subscription rate. It accepted bids worth 851 million shillings.

($1 = 87.3750 Kenyan shillings)

(Reporting by Kevin Mwanza; Editing by James Macharia) Keywords: KENYA TBILL/

(kevin.mwanza@thomsonreuters.com)(Tel: +254 20 2224717)(Reuters Messaging: kevin.mwanza.thomsonreuters.com@reuters.net)

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