This is the chilling moment a tourist is kidnapped inside an airport moments after stepping off a flight - with ransom gangsters receiving help from corrupt immigration police.

Jincai Chen, 39, landed at scandal-hit Suvarnabhumi Airport in Bangkok on May 6 in the evening after a short-haul flight from Hong Kong.

But within moments of leaving the plane she was followed by four Chinese men dressed in black and one Thai woman.

CCTV next to a walkway shows Jincai tussling with two of the gang who are holding her by the arms while another in a red shirt walks a few paces ahead throughout the abduction.

The group usher Jincai through security checks before two more men dressed in black join the group at the luggage carousel.

Shockingly, police said the gang received help from ten Thais - including a top immigration cop inside the airport - before demanding 15 million baht in ransom money from Jincai's husband.

The disturbing crime - committed inside the secure area of the airport - only emerged after her husband paid 10 million baht but refused to stump up the rest and called police on May 18.

Jincai - having been ferried to hotels and rented rooms across Thailand - was finally dumped on the roadside in the Bang Na district of Bangkok on May 19 at 11pm.

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