"We share the same recognition with the past cabinets that (Japan) caused tremendous damage and suffering to people in Asia," Prime Minister Shinzo Abe told a parliamentary committee.
The comments came after South Korean President Park Geun-Hye told a US newspaper that Japan had been re-opening old wounds and needed to reflect on history.
Japan's uneasy relationship with South Korea and China, both of which suffered during the imperial army's expansionism last century, has worsened in the last year due to a flaring of separate territorial spats.
However, the administration insisted yesterday there would be no rowing back.
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Foreign Minister Fumio Kishida said there was no plan to change a 1995 statement which said that Japan "regards with humility these facts of history and expresses deep remorse and heartfelt apology".
"Prime Minister (Shinzo) Abe has the same recognition," Kishida said.
The landmark pronouncement by then-prime minister Tomiichi Murayama was seen as a vital step in what many Asian nations said was Japan finally starting to come to terms with its brutal history.
Park said in an interview with the Washington Post that "the Japanese have been opening past wounds and have been letting them fester, and this applies not only to Korea but also to other neighbouring countries.