These were the angry scenes when a Russian 'sex course' was raided by police. Thirty-three Russian tourists had each paid 20,000 baht ( 450gbp) for a place on the ''advanced love making'' class at a hotel in Pattaya, Thailand.

Instructors demonstrated to how to make their partner climax while the attendees took notes and viewed diagrams on a flip-board.They were due to receive certificates after the class but staff at the up-market hotel became suspicious after hearing odd noises and called officers.Police arrived at 11 and closed the weird course and dismissed guests.

Ten instructors - some wearing matching t-shirts and others in tiny pink shorts - were arrested and frog-marched to the local station.Officers charged one instructor with overstaying in Thailand, three with unlawful entry into the kingdom and the rest for working without work permits.

Police Colonel Apichai Krobpetch, head of Pattaya Police, said: ''Officers arrived at the hotel at 11pm and found Russian gangs had rented a room to set up a training course for sex.This is an illegal sex education course.Forty three people were in attendance including ten instructors who were demonstrating sex. The participants are not guilty of any offense and they were then released. The ten iinstructors were taken to the station for processing.''