Interest rates fall at weekly US Treasury bill auction

WASHINGTON (AP) — Interest rates on short-term Treasury bills fell in Monday's auction with rates on three-month bills falling to the lowest level in five weeks.

Separately, the Federal Reserve said Monday that the average yield for one-year Treasury bills, a popular index for making changes in adjustable rate mortgages, fell to 0.59 percent last week from 0.67 percent the previous week.