Navy and police officers rounded up 70 alleged prostitutes, including more than 50 transvestites and 7 Madagascan women, in Pattaya early Thursday.
The operation took place at 1 am. The officers arrested the suspected prostitutes from the Pattaya Beach and Walking Street.
One of the suspects is a man and ten others are Thai women.
Police said the crackdown would continue to protect tourists from being deceived and robbed.