On May 21, 2025, Lieutenant Colonel Thongpreud Sirisukha, commander of Highway Police Division 3, ordered officers led by Colonel Suriya Puang Sambat and other senior police to conduct a raid on a health spa in Mab Yang Phro subdistrict, Pluak Daeng district, Rayong province, following complaints that the establishment was secretly engaged in prostitution while publicly advertising massage services.

Investigators found that staff members were offering special "body-to-body" massage services and explicitly proposing sexual intercourse with clients for 4,500 baht per 50-minute session. Two Vietnamese women were discovered preparing to engage in sex work. A search of the two-unit commercial building revealed that the second and third floors had been modified into over 10 service rooms equipped with beds and supplies, along with condoms and lubricant.

Eight suspects of Chinese, Myanmar, and Vietnamese nationality were arrested on charges of human trafficking, illegal immigration, and foreign worker violations. All female workers were screened under Thailand's National Referral Mechanism (NRM) for human trafficking victims, though none were found to be victims of trafficking.

Charges were filed under the Anti-Trafficking in Persons Act B.E. 2539, the Immigration Act B.E. 2522, and regulations governing foreign worker management.

At 12:35 p.m. on May 21, a reporter in Prachuap Khiri Khan documented a critical water hyacinth crisis choking the Prachuap River, creating stagnant conditions with severely depleted oxygen levels. Fish farmers in Ban Sai district saw their ruby fish cages decimated as oxygen-starved fish floated to the surface and died en masse, with total damages exceeding 3.9 million baht. MP Amnuay Vilavaloey from Prachuap Khiri Khan District 1 of the Bhumjaithai Party brought the urgent matter to parliament, calling on the Agriculture and Cooperatives Ministry to aggressively combat the water hyacinth problem and provide immediate relief to affected fish farmers.

Amnuay revealed the severity through aerial photographs showing the Prachuap River blanketed by dense mats of water hyacinth stretching for dozens of kilometers from Mueang Prachuap through Ban Sai districts. Despite provincial efforts, the massive volume of vegetation combined with privately-owned riverbanks has hindered irrigation department mechanized removal operations. High tidal conditions have worsened the situation by forcing water hyacinth further upstream into impassable blockages.

"Our people are suffering greatly, especially the fish farmers," Amnuay stated. "The fish are dying en masse because dissolved oxygen levels have plummeted to just 1.5 milligrams per liter—a critical level where aquatic life cannot survive."

Initial damage assessments identified two subdistricts and six villages in Ban Sai affected across Bang Phluwang and Bang Krachao subdistricts. The crisis has impacted 109 farmers, destroying over 2,895 square meters of fish cage area with cumulative damage reaching approximately 3,942,000 baht.

Amnuay, a five-term MP, emphasized this recurs annually, harming both raw drinking water quality and agricultural productivity while exacerbating seasonal flooding. He urged the Agriculture Minister to take decisive action based on the late King Rama IX's wisdom that "water is life," to restore vitality to both farmers and the Prachuap River.

Governor Veeraphun Deeawn has already mobilized emergency responses and ordered Ban Sai district to compile damage reports to declare the area a disaster zone for emergency fund allocation to compensate affected farmers.

The Royal Household Bureau on Thursday said a severe and uncontrolled infection has affected multiple vital organs of Her Royal Highness Princess Bajrakitiyabha Narendiradebyavati.

In its seventh statement on the princess's condition issued on 21 May, the bureau said doctors treating the princess at King Chulalongkorn Memorial Hospital had detected an abdominal infection since April 2026 caused by inflammation of the large intestine.

The statement said the infection caused unstable symptoms including low blood pressure, irregular heartbeat and abnormal blood clotting.

Despite continuous life-support treatment for her lungs and kidneys, along with multiple antibiotics and medications to stabilize blood pressure and heart rhythm, the princess's condition has continued to deteriorate, according to the statement.

"The condition indicates a severe infection that remains uncontrolled, affecting the function of multiple vital organs," the Royal Household Bureau said.

Doctors are continuing to provide full treatment and closely monitor her condition.

Princess Bajrakitiyabha has been receiving treatment at the hospital since 15 December 2022 after losing consciousness due to a heart condition.

Princess Bajrakitiyabha, 47, is the eldest daughter of King Maha Vajiralongkorn and Princess Soamsawali. She graduated in law from Thammasat University before obtaining advanced law degrees from Cornell University.

The princess has worked in diplomacy and law, previously serving as Thailand's ambassador to Austria and as a public prosecutor. She also represented Thailand at the 60th session of the United Nations General Assembly in New York, focusing on issues including crime prevention, criminal justice, human rights and migration.

On May 21, 2569, at the Election Commission (EC) office, lawyer and political activist Pattrapong Suphakson, known as 'Lawyer On' from Buriram, along with 20 alternate senators, submitted evidence of LINE application conversations and financial trails to the EC and filed a letter demanding justice and updates on the senator selection rigging case.

Pattrapong stated that the evidence demonstrates a coordinated plan during the 2567 senator selection to lock voting and handpick candidates from Group 4, representing medical professionals, with approximately 10 members who communicated and planned through LINE before the selection. The scheme allegedly involved a key figure—a doctor from the Ministry of Public Health—and notably, nearly all group members were subsequently elected as senators as planned.

"The reason I came today to submit evidence and letters to the EC is because I personally believe there are efforts to derail this case, preventing the perpetrators from facing punishment within the next approximately four weeks," Pattrapong said.

Former senate candidate Komet Kerdsamwat stated that he believes the senator selection rigging genuinely occurred, citing financial trail evidence beginning from the district-level registration process in Surat Thani Province. He noted irregular financial connections between district-level candidates extending to three provincial-level candidates, all affiliated with the blue-colored political party group.

The National Police Chief opened a training program to enhance the capabilities of drug investigation and suppression officers at the Metropolitan Police Command on May 20, 2025 at 1:30 PM. Police General Siam Bunyasorm presided over the opening ceremony held in the Achirya meeting room, 4th floor of the headquarters, attended by Deputy National Police Chief Theeradej Thammsudhee and other senior drug enforcement officials.

Deputy National Police Chief Theeradej was invited as a special lecturer to deliver presentations on basic drug investigation procedures and various investigation theories applicable to drug cases. The training aims to equip participating officers with practical knowledge and skills for improved narcotics suppression operations.

The National Sports Development Fund is supporting the preservation and promotion of traditional Muay Thai arts to raise awareness of sports among ethnic minority youth in Om Koi District, Chiang Mai Province. The fund is committed to conserving and passing on Thailand's valuable cultural heritage to young people and residents in remote areas, particularly among ethnic groups in Om Koi District. The event is scheduled for May 21, 2026, in Om Koi District, Chiang Mai, marking an important initiative to expand sports opportunities for local youth and communities.

The event aims to promote traditional Muay Thai arts, especially the wai khru (respect to teacher) ceremony, which represents Thailand's significant cultural heritage and identity. Participants will learn about the beauty, techniques, and cultural values of this long-standing tradition. The initiative also seeks to inspire youth to pursue Thai sports, particularly Muay Thai as the nation's martial art.

Additionally, the event features the "Om Koi Super Fight Kraipatsan Circuit" boxing competition, bringing together rising boxing stars from northern Thailand to compete fiercely alongside renowned fighters from the championship circuit. This creates excitement and generates interest among the community while giving youth the opportunity to experience professional Muay Thai competitions firsthand.