He said the police have enough evidence to ask public prosecutors to indict Bilal Turk, also known as Adem Karadag, who allegedly admitted to planting a bomb-laden rucksack at the shrine on Aug 17, and Yusufu Mieraili, who allegedly confessed to detonating it.
Pol Gen Chakthip said he would discuss the possible indictments with his assistant national police chief Srivara Ransibrahmanakul next week.
He said police were still verifying information on Thai suspect Odd Phayungwong, who reportedly escaped via the Thai-Malaysian border.
They have no new information about the suspect, other than he had supplied bomb-making materials for the explosions, and that he was once a security guard for red-shirt political rallies, said Pol Gen Chakthip.
He said police have yet to question any other red-shirt security guards about Mr Odd, who was previously linked to two politically-motivated bomb attacks in 2010 and last year.
Police had also heard reports of the blue-shirt suspect sought in connection with the Sathon pier blast on Aug 18, identified as Zubair Abdullah, was moving around the southern borders, the national police chief said.
Police will continue their hunt for more suspects, and several more arrest warrants are likely to be sought, he said.
Investigators are yet to pinpoint the countries from which a “substantial” amount of money was transferred to the bombing gang, he said.
He declined to confirm whether the money transfers were made solely to key suspect Abudureheman Abudusataer, or Ishan.
Pol Gen Chakthip said a male suspect of Arab appearance facing an arrest warrant after being caught on security camera breaking into the office of the Bangkok Military Court had been identified, but he declined to confirm if he had been connected to other suspects in the bomb case.
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