During the same auction, the yield on the 182-day Treasury bill shot up to 20.331 percent from 14.551 percent last week, the bank said.
The bank said it received bids worth 5.76 billion shillings for the 8 billion shillings' worth of bills offered.
It accepted 5.64 billion shillings.
The bank said it will offer Treasury bills of all maturities at two separate auctions next week to raise a combined 12 billion shillings.