This is the dramatic moment police stormed a plus-size sex party - with embarrassed tourists caught with their trousers down.

Officers raided the seedy venue at the Phahon Resort in the Thai capital Bangkok where a dozen overweight Thai women and male guests had gathered for the illegal orgy on March 9.

Cops found dozens of used condoms and sex toys at the scene. There were around six large women in a swimming pool and another six in bedrooms with men.

They arrested the party organiser Sophang Thongdonmuen, 49, on suspicion of prostitution. She allegedly charged men 1,800 Baht (40 GBP) for each woman they romped with.

Sophang said: 'I organised these parties because there was nothing similar for plus size women like me. A lot of men like heavy women but they can't find them.

'Everybody was happy with the service and nobody was hurt. It's just fun for us and makes us feel better about ourselves. I admit that I was the person who organised the party but everybody there was willing. Nobody was forced to join.'

Police said they learned of the sex party from digital fliers that were sent in chat groups. The brochures showed chubby women in revealing clothes posing together in rooms and pools.

Participants were promised access to a party room, food, alcohol, and 'unlimited sexual intercourse' with plus-sized women. Several men are said to have paid to spend time with all of the women - racking up bills of more than 20,000 Baht (440 GBP).

Police said they infiltrated the orgy with undercover agents then raided the venue after confirming the alleged illicit activities taking place.

Police Major General Theeradet Thumsuthee, chief investigator of the Metropolitan Police Bureau (MPB), said they organiser Sophang earned an 800 Baht cut from each attendee.

Sophang allegedly admitted to the charges.

The policeman said: 'The investigation team maintains an online patrol to monitor criminal activities on social media platforms.

'In this instance, the suspect organised prostitution services catering to people who are interested in 3XL-sized women, prompting a proactive operation to prevent such criminal activities.

'It was necessary for police to infiltrate the gang and join the party with the 3XL women. We successfully arrested the organiser.'

The officer said that the guests in attendance included foreign tourists and local men. They were all ordered to get dressed and leave. The other women involved were questioned at the station to gather more evidence.