Muslims around the world are celebrating the three-day holiday at the end of the holy month of Ramadan.
Worshippers gathered at mosques to pray.
Eid al-Fitr, the feast of breaking the fast, occurs when the new moon is first sighted, marking the end of a month of fasting from sunrise to sunset during Ramadan.
Around 3,000 people attended prayers at a mosque in the capital of Indonesia, home to the world's largest muslim population. Around 85-percent of people in the country of more than 250-million follow Islam.
In Beijing, people gathered at the largest mosque to pray during an hour-long ceremony hosted by a local imam. A mosque in suburban sydney overflowed with worshippers, and many people had to pray in the courtyard outside.
Security was tight in yemen's capital as muslims attended Eid al-Fitr prayers. The country is on alert after the government's announcement it foiled an al-Qaeda plot.
Rival political camps in Egypt's capital held large gatherings Thursday. Egyptians opposed to deposed president Mohammed Morsi and members of the army gathered in Tahrir Square, while Morsi supporters held prayers elsewhere in the capital.
Syrians at the largest refugee camp in Jordan also held prayers Thursday. The UN HCR says the camp is home to around 120,000 people.
In the West Bank city of Ramallah, Palestinian president Mahmoud Abbas attended prayers and placed a wreath on the grave of his predecessor Yasser Arafat. Hamas leader Ismail Haniyeh reaffirmed his opposition to peace negotiations with Israel.
In Afghanistan's capital, President Hamid Karzai urged the Taliban to lay down their arms as he observed the start of Eid al-Fitr.
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