TOKYO — Japan will not revise a landmark apology to women forced to work in military brothels during World War II even as it moves ahead with a review of the testimony used to create that apology, a spokesman for the Japanese government said Monday.

Yoshihide Suga, the chief cabinet secretary, told reporters that the conservative government of Prime Minister Shinzo Abe had no intention of changing the 1993 apology, called the Kono Statement. The apology admitted for the first time that the Imperial military played at least an indirect role in forcing the women, known euphemistically as “comfort women,” to provide sex to Japanese soldiers.

Mr. Suga was responding to rising criticism from South Korea, a former Japanese colony where many of the women came from, of an announcement made two weeks ago by Mr. Suga that the government would review evidence used to support the apology. At that time, Mr. Suga said the government would form a panel of experts to review the evidence used to back up the statement, mostly testimony made two decades ago by 16 aging former sex slaves.

Mr. Suga announced the review under pressure from nationalist lawmakers who denounced the 1993 apology as the product of a Korean-led campaign to defame Japan, saying the women were just common prostitutes working for money. South Korean officials and some analysts warned that Mr. Abe, who before becoming prime minister had also publicly doubted whether the women had been coerced, might be moving to scrap the apology.