Updated at 3:50 p.m. ET: The Rev. Sun Myung Moon, the self-proclaimed messiah who turned his Unification Church into a worldwide religious movement and befriended North Korean leaders as well as U.S. presidents, has died, church officials said Monday. He was 92.

Moon died Monday at a church-owned hospital near his home in Gapyeong, northeast of Seoul, two weeks after being hospitalized with pneumonia, Unification Church spokesman Ahn Ho-yeul told The Associated Press. Moon's wife and children were at his side, Ahn said.   

Church officials planned to meet later Monday to discuss mourning and funeral arrangements. The church will likely hold a 13-day mourning period and start accepting mourners at its nearby religious center on Wednesday, Ahn said.

Moon founded his Bible-based religion in Seoul in 1954, a year after the Korean War ended, saying Jesus Christ personally called on him to complete his work.  

The church gained fame -- and notoriety -- in the 1970s and 1980s for holding mass weddings of thousands of followers, often from different countries, whom Moon matched up in a bid to build a multicultural religious world. His followers were derisively referred to by critics as as "Moonies."

The church was accused of using devious recruitment tactics and duping followers out of money; parents of followers in the United States and elsewhere expressed worries that their children were brainwashed into joining. The church responded by saying that many other new religious movements faced similar accusations in their early stages.   

In later years, the church adopted a lower profile and focused on building a business empire that included the Washington Times newspaper, the New Yorker Hotel in Manhattan, Bridgeport University in Connecticut, as well as a hotel and a fledgling automaker in North Korea. It acquired a ski resort, a professional soccer team and other businesses in South Korea, and a seafood distribution firm that supplies sushi to Japanese restaurants across the U.S.   

“Words cannot convey my heart at this time,” said Thomas P. McDevitt, president of The Washington Times. “Rev. Sun Myung Moon has long loved America, and he believed in the need for a powerful free press to convey accurate information and moral values to people in a free world. The Washington Times stands as a tangible expression of those two loves.”

Watch World News videos on NBCNews.com

“As controversial as Rev. Moon was in the United States, I got to know him as a man whose heart was focused on bringing together people of different faiths to bridge divides. His call on people of faith to serve others is an important legacy,” Neil Bush, chairman of Points of Light and son of President George H.W. Bush, was quoted as saying by The Times.

The Unification Church claims millions of members worldwide, though church defectors and other critics say the figure is no more than 100,000.   

In 2009, Moon married 45,000 people in simultaneous ceremonies worldwide in his first large-scale mass wedding in years. Some were newlyweds and others reaffirmed past vows. He married an additional 7,000 couples in South Korea in February 2010. The ceremonies attracted media coverage but little of the controversy that dogged the church in earlier decades.   

Lee Jae Won / Reuters

The Rev. Reverend Sun Myung Moon and his wife, Hak Ja Han, attend a mass wedding ceremony of the Unification Church in Gapyeong, South Korea, March 24.

Born in 1920 in what is today North Korea, Moon said he was 16 when Jesus Christ called upon him to complete his unfinished work. While preaching the gospel in North Korea in the years after the country was divided into the communist-backed North and U.S.-allied South, Moon was imprisoned there in the late 1940s for allegedly spying for South Korea -- a charge Moon disputed.   

He quickly drew young followers with his conservative, family-oriented value system and unusual interpretation of the Bible. He conducted his first mass wedding in Seoul in the early 1960s.   

The "blessing ceremonies" grew in scale over the next two decades, with a 1982 wedding at Madison Square Garden in New York -- the first outside South Korea -- drawing thousands of participants.   

"International and intercultural marriages are the quickest way to bring about an ideal world of peace," Moon said in a 2009 autobiography titled "As a Peace-Loving Global Citizen."

"People should marry across national and cultural boundaries with people from countries they consider to be their enemies so that the world of peace can come that much more quickly."   

Moon began rebuilding his relationship with North Korea in 1991, when he met the country's founder Kim Il Sung in the eastern industrial city of Hamhung.   

Moon said in his autobiography that he asked Kim to give up his nuclear ambitions, and that Kim responded that his atomic program was for peaceful purposes and he had no intention to use it to "kill my own people."   

"The two of us were able to communicate well about our shared hobbies of hunting and fishing. At one point, we each felt we had so much to say to the other that we just started talking like old friends meeting after a long separation," Moon wrote.   

He added that he heard Kim tell his son: "After I die, if there are things to discuss pertaining to North-South relations, you must always seek the advice of President Moon."   

When Kim Il Sung died in 1994, Moon sent a condolence delegation to North Korea, drawing criticism from conservatives at home. Kim's son and successor, Kim Jong Il, sent roses, prized wild ginseng, Rolex watches and other gifts to Moon on his birthday each year. Kim Jong Il died late last year and was succeeded by his son Kim Jong Un. Moon sent a delegation to pay its respects during the mourning period for Kim Jong Il.   

Moon also developed good relationships with conservative American leaders, including former Presidents Richard Nixon, Ronald Reagan and George H.W. Bush. Still, he served 13 months at a U.S. federal prison in 1984-1985 for tax evasion. The church says the U.S. government persecuted Moon because of his growing influence and popularity with young people in the United States, his home for more than 30 years.   

As he grew older, Moon quietly handed over day-to-day control of his multibillion-dollar religious and business empire, which included dozens of companies ranging from hospitals and universities to a ballet troupe, to his children.   

His youngest son, the Rev. Hyung-jin Moon, was named the church's top religious director in April 2008. Other sons and daughters were put in charge of the church's business and charitable activities in South Korea and abroad.   After ending a first marriage, Moon remarried a South Korean, Hak Ja Han Moon, in 1960. She often was at Moon's side for the mass weddings.   

The youngest son told The Associated Press in a February 2010 interview that Moon's offspring do not see themselves as his successors.   

"Our role is not inheriting that messianic role," he said. "Our role is more of the apostles, where we share ... where we become the bridge between understanding what kind of lives (our) two parents have lived."   

Moon is survived by his second wife and 10 children.

NBC News staff and The Associated Press contributed to this report.

More world stories from NBC News:

• Girl accused of blasphemy in Pakistan may have been framed by Muslim cleric
• 'Big enough for all of us': Clinton says US can work with China in Pacific
• Assad stays cool amid reports of bread-line slaughter
• Ex-Marine on her journey from homelessness to the Paralympics
• 'A less polar pole': Arctic sea ice at record low
• Botched restoration turns Spanish church into tourist attraction

Follow World News from NBCNews.com on Twitter and Facebook