The Bank of Japan announces an unscheduled JGB buying operation

BoJ offers to buy an unlimited amount of JGBs at a fixed rate with maturities of 5yr-10yr

And offers to buy JPY 300bln in JGBs with residual maturity of 5yr-10yr

Gives USD/JPY a little lift:

This article was written by Eamonn Sheridan at www.forexlive.com. Source