According to my broker, USD/JPY reached a lower level at 148.72 before reversing this move to stabilize again around the 149.40 levels now. The reaction is in the headlines here. This is a bit of a sensitive question, but it only confirms what we should already know ahead of the BoJ policy meeting later this month. From last week:
It seems this is more due to the algos being sensitive near the 150.00 mark more than anything else.