The Department of Special Investigation has seized counterfeit goods worth millions of baht from markets in Don Muang and Khlong Thom, DSI chief Tarit Pengdit said on Friday.
Many offenders had been arrested in the process.
Pol Lt Col Chinchote Daengsurasri, chief of the DSI's Intellectual Property Department, said the new Don Muang market has been designated a red zone for intellectual property violation as there were many fake Louis Vuitton, Prada and Chanel products for sale.
Those arrested included Siriwan Chanplaisri and Rattnaporn Saejieow, who were in possession of about 1,000 fake brandname items with an estimated value of six million baht, he said.
Pol Lt Col Chinchote admitted that it is difficult to catch violators. Most customers were screened before being allowed to enter the shops, which have electric gates installed. This made it hard for the authorities to make raids.
The DSI also seized about 40,000 pirated CDs worth about four million baht in another raid at a building in Khlong Thom area in Pom Prap Sattru Phai district.
He said these sellers also monitored customers at all times and during raids the DSI officers were obstructed by a large mob. As a consequence, the raiding team had to be armed.