KARACHI, Pakistan, July 21 —Pakistan has acknowledged a message of regret sent by Robert S. MacNamara, president of the International Bank for Reconstruction and Development, regarding the unauthorized disclosure of a bank report highly critical of the Pakistani Government.

But, according to the Government's semiofficial press agency, Associated Press of Pakistan, “political quarters” here want Mr. MacNamara to remove several key bank officials.

The agency specifically criticized I. P. M. Cargill, the World Bank's director for Southeast Asia; David Gordon, the bank's Pakistan director, and another bank official, Hendrik van der Heijden.

The agency also charged that The New York Times, which published the report, was “spearheading the campaign against Pakistan.”

The burden of the World Bank report was that aid should be withheld from Pakistan until she resolves the East Pakistan problem in a political way.

WASHINGTON, July 21—A spokesman for the World Bank said today that Mr. McNamara had apologized for the publication of the report on East Pakistan in The New York Times but had not, as the Associated Press of Pakistan, said earlier this week, characterized the report as “biased and provocative” or made any comment at all on the substance of the report.