This story has been updated.

The Aga Khan, spiritual leader of the world’s approximately 20 million Shiite Imami Ismaili Muslims, arrived in Atlanta Tuesday evening as part of a yearlong celebration commemorating 60 years of his leadership, also known as his Diamond Jubilee.

» Photos: Aga Khan in Atlanta for historic Diamond Jubilee USA visit

His last visit to Atlanta was in 2008 in honor of his Golden Jubilee — 50 years of leadership.

The Aga Khan was greeted at the Fulton County Airport by Lt. Gov. Casey Cagle; Abby Turano, state deputy commissioner for international relations; and City of Atlanta chief operating officer Dan Gordon.

His Highness the Aga Khan, the 49th hereditary Imam (spiritual leader) of the world's Shia Ismaili Muslim Community, waves as he arrives at Fulton County Airport to celebrate with his U.S. followers his 60th anniversary as their leader on Tuesday, March 13, 2018, in Atlanta. The visit is part of a year-long celebration to commemorate his Diamond Jubilee (60th Anniversary). 
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More than 200 Ismaili Muslims from around the country also met the Aga Khan at the intimate arrival ceremony, which featured an official salute from the Atlanta police department honor guard and a performance of the U.S. national anthem from the 116th Army Band.

» RELATED: More than 500 Ismaili Muslims donate 80,000 Thanksgiving meals to Atlantans in need

The Aga Khan has been traveling throughout the Diamond Jubilee year to countries where his humanitarian institutions operate to launch new programs that help alleviate poverty and increase access to education, housing and childhood development.

In recognition of the longstanding support of government leaders and other partners in the vision for his institutional work, the Aga Khan met with Gov. Nathan Deal Wednesday among other state officials to discuss areas of mutual interest and collaboration and will continue on to Houston to meet with Texas Gov. Greg Abbott.

Georgia’s Governor Nathan Deal presented His Highness the Aga Khan with a State Proclamation recognizing his 60 years of service on Wednesday, March 14, 2018.

Credit: Contributed by Aga Khan Development Network

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Credit: Contributed by Aga Khan Development Network

During their meeting at the Georgia State Capitol, Deal , along with Georgia Secretary of State Brian Kemp, presented the Aga Khan with a state proclamation recognizing his 60 years of dedication towards improving human conditions around the globe.

More than 60 years ago, the Aga Khan founded the Aga Khan Development Network, a web of private, non-denominational development agencies across the globe aimed at empowering communities in need through social, cultural and economic development for all citizens, regardless of gender, origin or religion. The AKDN works in 30 countries, including in the United States, and employs more than 80,000 people.

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Among its many contributions to raising the quality of life of populations in the developing world, the AKDN's initiatives have given more than 2 million students access to education and  have provided humanitarian aid to those affected by global disasters.

"We want to demonstrate that being a local citizen doesn't preclude you from being a global citizen," Aleem Walji, CEO of the Aga Khan Foundation and a Georgia native, told The Atlanta Journal-Constitution Tuesday.

The Emory University alum previously worked as director of the World Bank's Innovation Labs to improve information technology services to the poor and as head of global development at Google, where he primarily focused on increasing transparency and accountability in government in regions of eastern Africa.

"Through all the work I did, I found the AKDN was the most bottoms-up in implementing development, and the most impactful," Walji said.

» RELATED: Aga Khan Foundation raises $3 million for global programs

Over the last six decades, the Aga Khan has received multiple accolades for his global service. Most recently, in 2017, the Aga Khan was awarded the Foreign Policy Association Medal; the President's Medal by the Architectural League of New York; the Champion for Global Change Award by United Nations Foundation and the Asia Game Changer Lifetime Achievement Award by the Asia Society.

“The Diamond Jubilee provides an opportunity to reflect on His Highness’s six decades of tireless work to improve the human condition for people around the globe," Atlanta Mayor Keisha Lance Bottoms wrote in a welcome letter to the Aga Khan, who was formally granted the title of "His Highness" by Queen Elizabeth II in 1957. "The city of Atlanta is honored and proud to be one of two communities to welcome His Highness during his visit to the United States.”

During his 10-day visit to the U.S., the imam will also be holding closed sessions with thousands of members of the Ismaili community. Ismailis believe that the Prophet Muhammad was the last and final prophet of God and that after his death, the prophet’s cousin, Hazrat Ali, became the first imam (or spiritual leader). The Aga Khan is their 49th hereditary imam.