YANGON, Myanmar – A U.S. citizen accused of subversion was released from prison in his native Myanmar and deported Thursday after serving part of a three-year prison sentence.

The aunt of Kyaw Zaw Lwin, also known as Nyi Nyi Aung, said he was released after 6 1/2 months in prison and taken to Yangon’s international airport for a flight to Thailand.

Khin Khin Swe said her nephew was accompanied to the airport by a U.S. consular official.

“We can confirm that Kyaw Zaw Lwin has been released from prison and has left the country,” the U.S. Embassy said in a statement. “We welcome that development.”

The 40-year-old was arrested Sept. 3 on arrival at the same airport. He was initially accused of plotting to stir up political unrest, which he denied.

He was sentenced in October for forging a national identity card, for possession of undeclared foreign currency, and for violating Myanmar’s so-called Resident Registration Act — under which he was accused of failing to renounce his Myanmar citizenship when becoming an American citizen and failure to inform authorities of his new address.

“He looks well and happy, though much thinner than before,” said Khin Khin Swe.

“I am very happy for him but I want families of other prisoners of conscience to be happy and hope that all will be released,” she said, adding that five of her relatives are in prison, including her son-in-law.

Myanmar’s military government holds more than 2,000 political prisoners, according to the U.N. and independent human rights organizations. The most prominent is opposition party leader Aung San Suu Kyi. The 1991 Nobel peace laureate has been detained for about 14 of the last 20 years, and is currently under house arrest, from which she is due to be released in November.

Kyaw Zaw Lwin’s mother is serving a five-year prison term for political activities, and his sister was sentenced to 65 years in prison for involvement in 2007 pro-democracy protests, which government forces brutally suppressed, activist groups and family members say.

Kyaw Zaw Lwin, who was held at a prison about 180 miles (300 kilometers) north of Yangon, was brought to the city’s notorious Insein prison Wednesday and handed over U.S. consular officials Thursday afternoon, said his aunt.

Last year, another American was deported by Myanmar. John Yettaw, whose case attracted considerably more attention, was sentenced to seven years in prison in August for sneaking into Suu Kyi’s home, but released less than a week later after a visit to the country by U.S. Senator Jim Webb.

As a teenager in Myanmar, previously known as Burma, Kyaw Zaw Lwin helped organize students during Myanmar’s 1988 pro-democracy uprising and later fled to the United States. According to dissident groups, he is a resident of Maryland.

His reason for returning to Myanmar was not clear, but there has been speculation he hoped to see his jailed relatives.