Srivara said investigators would apply for arrest warrants for suspects wanted over the Trang bombing, adding that police would not only use witness testimony to apply for warrants but also had details from the suspects’ ID cards.
He said the attacks were linked and the probe would not reach a dead end.
Srivara said Hua Hin bomb suspect Russalan Baima, a 35-year-old from Songkhla, would be charged with attempted arson and carrying an explosive device without permission.
An arrest warrant was issued for Russalan on Wednesday.
He said police had solid evidence against Russalan, who is reportedly a sympathiser of the deep South insurgency and is believed to be hiding in Thailand since the attacks.