Authorities here have said that they have evidence to suggest that money transferred to Thailand from overseas was used for purchase the bomb-making materials to carry out the country's deadliest bombing and that more suspects might have played a role in the attack.
"We have convincing evidence in hand. We know where they went to spend the money," Anti-Money Laundering Office secretary-general Seehanat Prayoon-rat told reporters.
"Money came from two countries," he said, without elaborating.
Investigation indicate that overseas remittances helped suspect buy bomb materials, he said.
Eleven people, including Emrah Davutoglu, a Turkish man married to Thai woman Wanna Suansan, played a role in the financial transactions, Seehanat said, adding that more suspects might have played a role in the attack.
Two bomb blasts rocked Bangkok last month.
One of them targeted the Erawan Brahma Shrine on August 17, killing 20 people and injuring more than 100 others.The other blast took place near a pier the following day but did not cause any casualties. Thai authorities have arrested two suspects in connection with the bombings.
One of them, Mieraili Yusufu, identified the alleged mastermind as Abdulrahman, also known by the aliases Abdus Sattar and Izan. Izan left Thailand on a Bangladesh-bound flight on August 16, a day before the bombing.
Prime Minister Prayut Chan-o-cha said yesterday that he had sought the cooperation from every country, including Bangladesh and China, in the search for Izan, who is believed to be the mastermind of the attack.
An official at the Chinese Embassy in Bangkok told The Nation newspaper here that the Chinese authorities were not aware of the report.
Prawut, meanwhile, met the Bangladeshi Ambassador in Bangkok who to seek information on the movement of the alleged mastermind.
"As far as we know, Izan left Thailand for Bangladesh but there is no clear information as to his next destination," he said.
The Bangladeshi police said the alleged mastermind had left their country for China after a two-week stay in the country.