Metropolitan police are still on the hunt for three other accomplices wanted for the murder and bury of 28-year old woman, Ms Supaksorn Ponthaisong, in Kanchanaburi province while they will send two prime suspects to the court this afternoon for extension of their detention.
Police said seven persons were involved in the murder, and four have been arrested, one of them the police chief of Ban Pong district of Ratchaburi province, Pol Col Amnuay Pongsawat.
But the officer denied any connection in the murder, although admitted of knowing her casually.
Metropolitan Police Bureau commissioner Pol Lt Gen Sanit Mahathavorn arrived at Nong Khan Plu police station in Kanchanaburi this morning to question a third suspect, Ms Kannica Krumram.
He said Pol Col Amnuay, and another suspect would be escorted to Talingchan Criminal Court in Bangkok this afternoon for court's permission to extend their detention.
He said the police would also oppose bail for the suspects.
Among the three fugitives wanted for the case are soldiers, he added.
In another development, a forensic doctor at the Police General Hospital Pol Col Viroon Supasingsiripreecha revealed that autopsy of the dead body showed she died from suffocation.
There were bruises on her forehead but not the cause for death.
Forensic doctors have collected DNA samples from the parents of the victim who they strongly believed was their daughter for test.
The parents said they recognized the skin tattoos on her daughter's back.
The victim also had skin tatoos.
The father of Ms Supaksorn Ponthaisong recalled her daughter had engaged in a dispute with a group of men who smashed her car and was paid 50,000 baht in compensation in 2015.
She was kidnapped by a group of men from her apartment in Nong Khang Plu in Kanchanaburi in mid-December and has not been seen ever since.
Source: Thai Public Broadcasting Service (Thai PBS)