NEW YORK >> New York Times correspondent Anthony Shadid, a two-time Pulitzer Prize winner whose dispatches captured untold stories from Baghdad under "shock and awe" bombing to Libya wracked by civil war, has died of an apparent asthma attack in Syria while reporting on the uprising against its president.

Shadid, 43, who survived a gunshot wound in the West Bank in 2002 and was captured for six days in Libya last year, was returning with smugglers from Syria to Turkey when he collapsed Thursday, The Times said.

Times photographer Tyler Hicks told the newspaper that Shadid had suffered one bout of asthma the first night, followed by a more severe attack a week later on the way out of the country.

"I stood next to him and asked if he was OK, and then he collapsed," Hicks told The Times.

Hicks said that Shadid was unconscious and that his breathing was "very faint" and "very shallow." After a few minutes, he could see that Shadid "was no longer breathing," Hicks said.

Hicks administered CPR for 30 minutes but couldn’t revive Shadid, he said. Hicks carried Shadid’s body to Turkey, the newspaper said.

"Anthony was one of our generation’s finest reporters," Times Publisher Arthur Sulzberger said in a statement. "He was also an exceptionally kind and generous human being. He brought to his readers an up-close look at the globe’s many war-torn regions, often at great personal risk. We were fortunate to have Anthony as a colleague, and we mourn his death."

White House press secretary Jay Carney read a statement on Air Force One en route from San Francisco to Everett, Wash., on Friday.

"All of us, the president on down, were greatly saddened by the news that Anthony Shadid had died while reporting Syria," he said. "Anthony Shadid was one of the best, perhaps the finest, foreign correspondent working today, in my opinion."

"It was because of some of the risks he took that readers around the world were aware of things that were happening and changes that were taking place in the region," Carney said. "The fact that he was in Syria speaks exactly to that. Were it not for Anthony and reporters like him, you would know a lot less about the absolute brutality of the Assad regime and the democratic aspirations of Syria."

Lebanon’s Prime Minister Najib Mikati wrote on his Twitter account: "Sincere condolences to journalist Anthony Shadid’s (RIP) family, friends & New York Times colleagues. I’ve known and admired him personally. N.M."

Shadid’s father, Buddy Shadid, told The Associated Press on Thursday his son had asthma all his life and had medication with him.

"(But) he was walking to the border because it was too dangerous to ride in the car," the father said. "He was walking behind some horses — he’s more allergic to those than anything else — and he had an asthma attack."

Shadid, an American of Lebanese descent, had a wife, Nada Bakri, and a son and a daughter. He had worked previously for the AP, The Washington Post and The Boston Globe. He won Pulitzer Prizes for international reporting in 2004 and 2010 when he was with the Post.

In 2004, the Pulitzer Board praised "his extraordinary ability to capture, at personal peril, the voices and emotions of Iraqis as their country was invaded, their leader toppled and their way of life upended."

Shadid also was the author of three books, including "House of Stone: A Memoir of Home, Family, and a Lost Middle East," in which he wrote about restoring his family’s home in Lebanon, forthcoming next month from Houghton Mifflin Harcourt.

A native of Oklahoma City, Shadid graduated from the University of Wisconsin-Madison. He joined the AP in Milwaukee in 1990, worked on the International Desk in New York and served as the AP’s news editor in Los Angeles. He was transferred to Cairo in 1995, covering stories in several countries.

AP Senior Managing Editor John Daniszewski, who worked with Shadid in Baghdad during the U.S. invasion in 2003, called him "a brilliant colleague who stood out both for his elegant writing and for his deep and nuanced understanding of the region."

"He was calm under fire and quietly daring, the most admired of his generation of foreign correspondents," Daniszewski said.

Martin Baron, the editor of the Globe, for whom Shadid worked while at that newspaper, told the Times that Shadid had a "profound and sophisticated understanding" of the Middle East.

"More than anything, his effort to connect foreign coverage with real people on the ground, and to understand their lives, is what made his work so special," Baron said. "It wasn’t a matter of diplomacy: it was a matter of people, and how their lives were so dramatically affected by world events."

Ralph Nader, the former third-party presidential candidate, called Shadid "a great, great reporter."

"His courage, stamina, intellect and extraordinary powers of observation respected his readers’ intelligence while elevating his profession’s standards," the longtime consumer advocate said in a statement.

Nader added in a phone call to the AP that he knew Shadid from his time at The Washington Post and had met his family.

"What a loss," he said.

A hearse brought Shadid’s body Friday to a forensic science institute in Adana, in southern Turkey, where an autopsy was to be performed, the state-run Anatolia news agency reported. Hicks and a plain-clothed Turkish military official accompanied the hearse, it said.

Hicks refused to answer reporters’ questions about his journey back to Turkey and he followed the coffin into the building, it said.

Turkish Foreign Minister Ahmet Davutoglu posted comments about Shadid’s death on his Twitter account in English.

"Not only as a good journalist but a true friend as well, Anthony Shadid’s death put me in sorrow. Knowing that at the very final moments … of his life, he was looking for truth," Davutoglu wrote.

Shadid had been reporting in Syria for a week, gathering information on the resistance to the Syrian government and calls for Syrian President Bashar Assad to step down, the Times said. The exact circumstances and location of his death were unclear, it said.

Times Executive Editor Jill Abramson sent a note to the newsroom Thursday evening, relaying the news of Shadid’s death and remembering him.

"Anthony died as he lived — determined to bear witness to the transformation sweeping the Middle East and to testify to the suffering of people caught between government oppression and opposition forces," she wrote.

Shadid, long known for covering wars and other conflicts in the Middle East, was among four reporters detained for six days by Libyan forces loyal to Moammar Gadhafi last March.

Speaking to an audience in Oklahoma City about a month after his release, he said he had a conversation with his father the night before he was detained.

"Maybe a little bit arrogantly, perhaps with a little bit of conceit, I said, ‘It’s OK, Dad. I know what I’m doing. I’ve been in this situation before,’" Shadid told the crowd of several dozen people. "I guess on some level I felt that if I wasn’t there to tell the story, the story wouldn’t be told."

When Shadid’s wife was asked at the time whether she worried about him returning to writing about conflicts, she said as a journalist she understood that he might need to.

"At the end of the day, he’s my husband, and the thought of going through life without him and raising our children alone is terrible," she said afterward.

Shadid’s father, who lives in Oklahoma City, said a colleague tried to revive his son after he was stricken Thursday but couldn’t.

"They were in an isolated place. There was no doctor around," Buddy Shadid said. "It took a couple of hours to get him to a hospital in Turkey."

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Associated Press writers Rochelle Hines in Oklahoma City and Suzan Fraser in Ankara, Turkey contributed to this report.