The suspect was one of three perpetrators who were responsible for all bombs in Hua Hin on the day, according to Deputy National Police Chief Srivara Rangsipramanakul.
Last week, the court has issued an arrest warrant for Russaran Baima, a resident of Songkhla for the attack and police was looking for another suspect who is on the run, he said.
A spate of bomb and fire rocked Prachuap Khiri Khan and six southern provinces during August 10-12, killing four people and injured more than 30 others including foreign tourists.
Asmin, 29, was also wanted in connection with violence in the Southernmost Yala province in April and a bomb at a shopping mall in Surat Thani’s Samui island in May last year.