Football clubs moved fast in their attempts to protect their reputation after their players or officials were alleged to have been involved in match-fixing.
They also insisted the clubs themselves had nothing to do with the unlawful practice.
The Football Association of Thailand and Royal Thai Police yesterday named 12 people who were allegedly involved in manipulating match results.
They were arrested and released on bail, national police chief Chakthip Chaijinda told a press conference.
FAT president Somyot Poompunmuang was also at the event at the Royal Thai Police headquarters.
Among them are five players -- Thai League 1 side Navy's Suttipong Laoporn, Narong Wongthongkum, Suvithaya Numsinlark and Seksan Chaothonglang and T1 club Nakhon Ratchasima goalkeeper Veera Kerdputsa.
The others include Cherdsak Boonchu, director of Si Sa Ket, who were relegated from T1 to T2 at the end of last season which concluded at the weekend, and referees Poomirin Kumruen and Teerajit Sithisuk.
Nakhon Ratchasima chairman Tewan Liptapanlop announced that the northeastern club had terminated their contract with Veera.
Veera initially joined the Swat Cats on a six-month contract and was recently given a new two-year deal.
While Tewan said he believed the goalkeeper was not involved in match-fixing, he wondered why his team often conceded goals in the last three to five minutes of a match in the past four or five games.
"I believe Veera is a professional and is not involved in match-fixing. However, we will discuss the matter with our lawyers to consider whether to sue Veera for causing damage to the club's reputation," Tewan added.
"I'd like to confirm that the club were not involved in match-fixing."
Veera was alleged to have thrown the T1 match against Suphanburi on Sept 10 which ended in a 2-2 draw.
Si Sa Ket chairman Thanet Kruarat said the club had nothing to do with match-fixing.
"I am not a gambler. I am not close to that director [Cherdsak]," said Thanet, who will speak to the media at a press conference today.
Navy coach Somchai Chuayboonchom called on the FAT and police to take drastic action against match-fixers.
"I believe there are more [people involved in match-fixing]," he said.
"The FAT should eradicate the problem."
Navy chairman Rangsarit Sattayanukul said the club would extend cooperation to the FAT.
Many players of the club are Navy officers and if they are found guilty they will be fired from the force, Adm Rangsarit said.
Meanwhile, FAT president Somyot Poompunmuang said Poomirin had been suspended from domestic and international duties.
He said it is "a pity" because Poomirin is regarded as one of Thailand's top match officials who became a Fifa-level referee this year.