BANGKOK — Turkey expressed skepticism Thursday over reports that its nationals were involved in the Aug. 17 bombing of a Bangkok landmark that killed 20 people, as Thai authorities reported finding a "suspicious fluid" during a raid at a third home linked to suspects in the attack.
National police spokesman Prawut Thavornsiri said police found items including a "suspicious fluid in a barrel" during the raid Thursday at a home in the outskirts of Bangkok. He said the items were being examined by a police explosives unit.
Thai authorities have suggested that at least two of the eight suspects are possibly Turkish, prompting the Turkish Embassy in Bangkok to issue a statement Thursday saying that it has not received confirmation from Thai authorities about the nationalities of the suspects.
The Turkish connection has boosted a theory that the suspects may be part of a group seeking to avenge Thailand's forced repatriation of more than 100 ethnic Uighurs to China in July. Thailand is believed to be a transit stop for Chinese Uighurs attempting to go to Turkey.
Uighurs (pronounced WEE-gurs) are related to Turks, and Turkey is home to a large Uighur community. The bombed site, the Erawan Shrine, is especially popular with Chinese tourists, feeding the speculation that it could have been targeted by people who believe the Uighurs are oppressed by China's government.
China has alleged that the repatriated Uighurs included some who intended to join Islamic State fighters in Syria.
In another finding that could support a link to Uighurs, police said Thursday that a man arrested Tuesday who is considered a main suspect in the bombing was carrying a Chinese passport. The passport indicated he was from the western Chinese region of Xinjiang, but Thai authorities had not yet verified its authenticity, said national police spokesman Prawut Thavornsiri. Xinjiang is the home of the Turkish-speaking Uighurs.
Authorities on Thursday identified the suspect but issued two different spellings of his name — Mieraili Yusufu and Yusufu Meerailee — and said he faces charges of possessing unauthorized explosives. Police said they found his fingerprints on a bottle of bomb-making material recovered from an apartment that was raided over the weekend.
The other suspects include a Thai woman identified as Wanna Suansan said to be married to a Turkish man. Both are being sought by Thai police.
The home police raided Thursday was leased by Wanna, the police spokesman said.
"The Explosives Ordnance Disposal Team is examining the scene now," Prawut told reporters. "Don't go there yet. It could be dangerous."
The home is in the outer Bangkok neighborhood of Min Buri near another apartment also leased by Wanna where police found gunpowder, fertilizer and other bomb-making materials in a raid over the weekend.
In interviews with Thai media, Wanna said she is innocent and is currently living in Turkey.
Thai authorities have been careful not to state publicly that the case may be linked to the Uighurs. They have said that such speculation could affect international relations and hurt tourism.
"We have agreed already that I won't mention the name of a country, the name of a group or their religion. Please allow me to say that it is a network, and let's wait and see which group it is," Prawut said Thursday when asked if the case was linked to Uighurs.
Thai security officials have suggested the suspects are part of a human trafficking ring with a grudge against Thailand. However, Thai Prime Minister Prayuth Chan-ocha, known for his outspokenness, has stretched the theory to acknowledge it could have been a gang involved in smuggling Uighurs out of China.
The embassy statement highlighted the confusion surrounding the ongoing investigation. It quoted the Turkish Foreign Ministry spokesman in Ankara as pointing out Thai press reports saying that Mieraili, who was reportedly detained near the Thai-Cambodian border, had a Chinese passport and that the first suspect, arrested in the raid on the Bangkok apartment, had a fake Turkish passport.
"There is no clear information on the issue," the spokesman was quoted as saying, urging Thai authorities to "provide clear and correct information."
While suggesting that Thai officials have been providing little or no response to Turkish diplomatic queries, the statement acknowledged that each country's embassy has been in touch with its host country's foreign officials.
Prawut responded late Thursday to the criticism, saying Thailand is still investigating and once it has completed forensics and other tests it will send the passports to Turkey and China for verification.
Turkey skeptical Bangkok bomb suspects are Turks
A man who was arrested at an apartment in Bangkok, Thailand, along with evidence police said included bomb-making equipment and stacks of passports. Royal Thai Police via AP