WASHINGTON (AP) — Interest rates on short-term Treasury bills rose in Monday's auction to the highest levels in two weeks.

The Treasury Department auctioned $27 billion in three-month bills at a discount rate of 1.420 percent, up from 1.050 percent last week. Another $27 billion in six-month bills was auctioned at a discount rate of 1.790 percent, up from 1.550 percent last week.

The three-month rate was the highest since these bills averaged 1.690 percent on Sept. 8. The six-month rate was the highest since 1.900 percent on Sept. 8.