"Bangkok's showcase new international airport is no stranger to controversy.

Built between 2002 and 2006, under the governments of then-Prime Minister Thaksin Shinawatra, the opening date was repeatedly delayed.

It has been dogged by allegations of corruption, as well as criticism of the design and poor quality of construction.

Then, at the end of last year, the airport was shut down for a week after being occupied by anti-government protesters.

Now new allegations have been made that a number of passengers are being detained every month in the duty free area on suspicion of shoplifting, and then held by the police until they pay large sums of money to buy their freedom."

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