
All were ordered detained until October 1. Two aged under 17 will be sent to a juvenile remand centre.
Police will interview 150 witnesses. The court denied six applications for bail.
The suspects, arrested and repatriated to Thailand, allegedly used voice-over Internet protocol telephony from China to notify people in Thailand that they had fallen victim to credit-card fraud and were in debt.
They had victims transfer money using ATMs to accounts controlled by the gang.