It has been a straight-line move over the past hour to a high of 93.04. I suspect it was the Shirakawa news leaking out earlier in the Japanese press but I can’t confirm.
The next level of resistance is 93.18 followed by a barrier at 93.25.
Similar story in EUR/JPY which has rallied nearly 200 pips but has stalled out ahead of 126 (for now). More buy stops above.