In this image taken from Thursday, Oct. 24, 2013 video obtained from the Shaam News Network, which has been authenticated based on its contents and other AP reporting, two men treat a civilian young man rescued from the wreckage of a building after it was struck by government forces in the suburb of Jobar, Damscus, Syria. The Syrian conflict, which began as a largely peaceful uprising against Assad in March 2011, has triggered a humanitarian crisis on a massive scale, killing more than 100,000 people, driving nearly 7 million more from their homes and devastating the nation's cities and towns. Iranian Foreign Minister Mohammad Javad Zarif, right, shakes hands with U.N. and Arab League envoy on Syria Lakhdar Brahimi as they arrive at their joint press conference in Tehran, Iran, Saturday, Oct. 26, 2013. Iranian Foreign Minister Mohammad Javad Zarif, right, and U.N. and Arab League envoy on Syria Lakhdar Brahim listen to a journalist at their joint press conference in Tehran, Iran, Saturday, Oct. 26, 2013. BEIRUT (AP) - Syrian Kurdish gunmen on Saturday seized a major border crossing with Iraq from al-Qaida-linked groups following intense infighting between rebel groups that raised concerns of a spillover, activists and an Iraqi official said. The latest violence coincided with a visit by the U.N.-Arab League envoy to Iran, a staunch ally of President Bashar Assad's government, to press efforts for international peace talks aimed at ending the civil war, now in its third year. The Kurdish militiamen captured the Yaaroubiyeh post in northeast Syria after three days of clashes with several jihadist groups there, including Jabhat al-Nusra and the Islamic State in Iraq and the Levant. An Iraqi intelligence official confirmed that Kurdish rebels now held the crossing point - one of two main crossings with Iraq - adding that Baghdad brought reinforcements to the area to prevent any spillover of violence. "They were heavy battles in which all types of weapons were used," said the Iraqi official, who spoke on condition of anonymity in line with regulations. Iraqi forces are ready to repel any attack. Kurdish groups control a large swath of northern Syria, and they are suspicious of Islamic groups who have moved into predominantly Kurdish areas in the chaos of the civil war. Clashes between their fighters and jihadists in northern and northeastern areas of Syria have killed hundreds of people in the past months. The border crossing point was under government control until March when hard-line rebels captured it. Syrian rebels, particularly the hard-line groups, are believed to draw support from insurgents in Iraq. Sunni Arabs dominate both the Syrian rebel movement and the Iraqi insurgency. The U.S., the United Nations and Russia are pushing for an international peace conference to be held in Geneva next month, bringing together the warring sides. But no final date for the conference has been set and it is unclear whether the sides can reach an agreement on the agenda. Loay al-Mikdad, a spokesman for the rebel Free Syrian Army, said Saturday he expected the conference to be postponed. Members of the FSA command met Thursday with the U.N.-Arab League Special Envoy for Syria, Lakhdar Brahimi, who traveled Saturday to Tehran. "As a result of the discussions, we felt that there is an international direction toward postponing the conference for some time," al-Mikdad said. Arab League officials said earlier this month that the conference would be held Nov. 23-24. Brahimi, at a joint press conference with Iran's Foreign Minister Mohammad Javad Zarif, said Iran's participation in such a conference is "necessary." Zarif said Iran would participate if it is invited. Syrian rebels, meanwhile, denied government media reports that the head of the Nusra Front had been killed. Friday's one-line state media report, which could not be independently confirmed, said Abu Mohammad al-Golani died in the coastal province of Latakia. But rebels said they had received no word of clashes in that province. If government reports on the death of al-Golani are correct, then the capture of the Yaarobiyeh post would be the second setback for al-Nusra and its allies in recent days. Al-Mikdad said Syrian rebels did not report any recent clash in Latakia province. He says his group is unsure if al-Golani even exists. This is part of the regime's lies. Our information from the ground says that this is not true and not accurate," al-Mikdad said by telephone. In Daraa province in the south of the country, rebels captured the town of Tafas after weeks of fighting that left scores of people dead, the Britain-based Syrian Observatory for Human Rights said. Syrian state media did not report on the battle. Associated Press writers Qassim Abdul-Zahra in Baghdad, Albert Aji in Damascus, Syria, and Ali Akbar Dareini in Tehran, Iran, contributed to this report.