A U.N. report on human rights in Iran says "a renewed wave of executions" occurred about the same time the country's Islamic fundamentalist government agreed to a cease-fire with Iraq.

A copy of the report to the General Assembly, obtained Wednesday, calls for continued scrutiny of Iran's human rights practices, citing executions of political dissidents and other reports of abuses.The first secretary of Iran's U.N. Mission, Amir Hossein Zamaninia, said the mission had seen the report and had no comment.

U.N. special representative Rey-naldo Galindo Pohl of El Salvador said in his report, "A large number of prisoners, members of opposition groups, were executed during the months of July, August and early September 1988."

The cease-fire putting at least a temporary halt to a war that since 1980 has left at least 1 million dead and injured was signed Aug. 20 by Iran and Iraq.

Most of those executed since midsummer were said to be members of the People's Mujahedeen, an outlawed opposition group, but the report said about 20 belonged to such other opposition groups as the Tudeh party, a Marxist organization, and the People's Fedayeen.

It did not say how many people had been put to death, but mentioned groups of executions cited in Iranian and other media from July through September that included 1,140 political executions and others for common crimes.

The Washington office of the People's Mujahedeen said there has been "a dramatic rise in political arrests, torture and executions in Iran" since September.

"Specifically, in the last three months alone, more than 10,000 persons have been arrested and thousands executed on the charge of opposition" to Ayatollah Ruhollah Khomeini's regime, said a statement by spokesman Aladdin Touran distributed at U.N. headquarters.

The U.N. report notes that the executions followed a July 25-28 raid into Iran by National Liberation Army, the armed wing of the People's Mujahedeen.

It said persecution of Bahai worshipers appears to have decreased, although Iran's attitude toward members of the faith has not changed. Bahais are denied the right to practice their faith in Iran, and cannot obtain higher education or work for the government.

"By July 1988, a number of Bahais, including some prominent members of the Bahai community who had been arrested, allegedly because of their faith, were released from prison and some prison sentences were reduced," the report said.

Galindo Pohl interviewed seven Bahais and nine sympathizers of the People's Mujahedeen who formerly lived in Iran in addition to obtaining written accounts and information from Iranian media, his report said.