UNITED NATIONS, NOV. 19 -- A report by a special U.N. representative has concluded that human rights violations "occur frequently" in Iran.

The report, prepared by Reynaldo Galindo Pohl, the special representative of the U.N. Commission on Human Rights, is more detailed and critical than an initial report he prepared last January. It also concludes that "government action to prevent and remedy such violations has not been sufficient to put an end to them."

The 96-page document, based on a visit to Iran in October, notes that according to official estimates, 113 people have been executed by authorities since March 21 and observes that figures by sources outside Iran are "considerably higher."

Galindo Pohl spent eight days in Iran investigating charges of rights violations and said he continues to receive "many reports" about trials conducted without lawyers, lack of public access to trials taking place in prisons, failure by authorities to inform those arrested of charges against them and government failure to respond to petitions.

"It should be noted that the laws . . . have the effect of ensuring that associations whose purpose is political propaganda and electioneering or the protection of human rights are not legally recognized," the report states. It "does not appear possible to exercise the right to disagree with the government," the report says.

Galindo Pohl also met with Foreign Minister Ali Akbar Velayati, who warned that further international human rights monitoring could not continue "for long."

The report concludes that international monitoring "should continue" to promote compliance with international standards.

The opposition People's Mujaheddin of Iran, said the report, which may lead to a U.N. General Assembly resolution critical of Iran, was "a little bit better than the first" but still "superficial."