The three-month bill was at about 7.04 percent late in the day.
The rate of the three-month bill dropped to 4.90 from 4.91 percent.
It is the lowest rate on a new three-month bill in nearly four years.
Three-month bills were offered late in the day at 6.74 percent, up five basis points.
A week ago, three-month bills were sold at an average rate of 7.32 percent.
The rate for a three-month bill was unchanged at 4.95 percent.
By late Friday, the rate on the outstanding three-month bill was 3.62 percent.
By late in the day, three-month bills were offered at 7.91 percent, up three basis points.
The average discount rate for a three-month bill increased by three basis points, to 8.51 percent.
But the price of the three-month bill rose, with its rate falling a basis point, to 5.28 percent.
