Traders in the 10-year bond options pit at the Chicago Board of Trade signal orders.

U.S. government debt prices were mixed on Friday as investors continued to speculate on whether the Federal Reserve will raise rates next month.

The yield on the benchmark 10-year Treasury note was higher at around 2.355 percent, while the yield on the two-year Treasury note was lower, at 1.111 percent. Yields move inversely to the price.