Prime Minister Prayuth Chan-ocha said today that he did not know whether China would hand over the suspect if or when he was arrested. Police have suggested a man carrying a Chinese passport in the name Abudureheman Abudusataer may have directed the bombing of the Erawan Shrine.
The man, also known by the nickname Izan or Ishan, reportedly left Thailand on August 16 for Bangladesh and then China.
The envoy, Saida Muna Tasneem, told police that the suspect obtained a visa for Bangladesh in Bangkok.
Prawut said Thai authorities contacted their Bangladeshi counterparts on September 2, after the suspect left, but asked for information on his activities during his two weeks there.
Nazrul Islam, a police spokesman in Dhaka, gave a different timetable for the events, saying that Thai police passed along their information only this past Thursday.
Spokesmen for India's External Affairs and Home ministries said they had no information about the suspect and had received no request for it from Thai authorities.
Prawut said police were checking whether other suspects, including perhaps the man who placed the bomb at the shrine, were trying to flee via Thailand's southern border with Malaysia.
Arrest warrants seek about a dozen suspects in connection with the bombing, including several men carrying Turkish or Chinese passports, along with others whose nationalities are unknown. One Thai woman married to a Turkish man is also wanted.
The alleged Turkish and Chinese links have fueled speculation that the bombing was to avenge Thailand's forced repatriation of more than 100 ethnic Uighurs to China in July.
Uighurs (pronounced WEE-gurs) are related to Turks, and Turkey is home to a large Uighur community.
The Erawan Shrine is especially popular with Chinese tourists, feeding the idea that it could be a target for people who believe the Uighurs are oppressed by China's government.
