Ali Akbar Dareini

TEHRAN, IRAN: The U.N. chief jolted his Iranian hosts for a nonaligned nations meeting Wednesday by pointing out “serious concerns” in Tehran’s human rights record and urging cooperation with the world body to improve freedoms.

U.N. Secretary-General Ban Ki-moon had signaled he would not shy away from criticism of Iran during his visit to the Nonaligned Movement gathering in Tehran, but the sharp comments appeared to catch Iranian officials off guard just hours after his arrival.

“We have discussed how United Nations can work together with Iran to improve the human rights situation in Iran. We have our serious concerns on the human rights abuses and violations in this country,” he told a news conference as he sat next to Iran’s Parliament Speaker Ali Larijani, who frowned at the remarks.

Iran’s opposition groups had urged Ban to use his appearance in Tehran as a platform to criticize Iran’s ruling system over its crackdowns on political dissent, including the house arrests of opposition leaders Mir Hossein Mousavi and Mahdi Karroubi.

While in Tehran, Ban also could raise sensitive issues such as demands by U.N. nuclear inspectors for wider access to various sites, including a military base near Tehran suspected of being a proving ground for explosives experiments that could be used to test nuclear triggers. Iran denies it seeks nuclear arms, but Western nations and allies fear Tehran’s uranium enrichment labs are moving close to warhead-grade material.

U.N. spokesman Martin Nesirky said in his talks, Ban expressed frustration that “little tangible progress” has been made in talks between Iran and world powers over Tehran’s nuclear program. No date has been set to resume negotiations.

Iran says it wants talks to continue, but also claims that the current gathering in Tehran shows that Western efforts to isolate Iran have failed.

In Vienna, the U.N.’s nuclear agency has created a special Iran Task Force of nuclear weapons experts, intelligence analysts and other specialists focused on probing Tehran’s atomic program, according to an internal document shared with the Associated Press.

Iran is seeking to use the weeklong meeting of the 120-nation Nonaligned Movement to promote its position that its nuclear program is peaceful and its uranium enrichment is within the U.N. treaty rules. The meetings are capped by a two-day summit that begins today.

Ban’s visit is being interpreted by Iranian media as a blow to Western attempts to isolate the Islamic republic in defiance of Israeli and American calls to boycott the meeting.

Tehran is also seeking to win support from the nonaligned bloc, accounting for nearly two-thirds of the U.N. member states, for its nuclear program. A visit to Natanz uranium enrichment site in central Iran by participating leaders has not been ruled out.