USD/JPY extended its breakout above the July 1 peak of 162.84, hitting a fresh 163.24 high and keeping upside pressure intact.
The move followed a break of a three-week triangle pattern, with technical momentum now pointing to the December 1986 high at 164.00 and then 164.95.
Support has been raised to the 162.50-162.00 congestion zone; a break below that area would ease the rally and shift focus to 161.28-161.00, then 160.48.
The latest push higher comes after the yen earlier touched a four-decade low near 163.24, prompting Japanese officials to warn of possible bold action as traders weigh BOJ tightening prospects.