Thirty-year bonds were trading 1-7/32 higher in price to yield 3.24 percent, down from 3.30 percent late Friday. Bond yields dipped to as low as 3.21 percent in the overnight session.

Benchmark 10-year notes were trading 9/32 higher in price to yield 1.96 percent, down from 1.99 percent late Friday.

Copyright Reuters, 2011