Police are seeking the extradition of two Myanmar nationals who are believed to have killed a family of four at a border farm in Mae Sot district over the weekend, following their arrests in Myanmar.
The suspects -- identified as Suay, 48, and Sui, 20 -- were detained in Hpa-an, the capital of Kayin State of Myanmar, according to an informed source.
Myanmar police were alerted about the presence of the two suspects after some people there spotted them and remembered that they were wanted by the police for murder, said the same source.
Ador and his wife, Makhin La, both 45, and their two sons, aged four and four months, were found bludgeoned to death around 8.30am on Sunday at a house on farm in tambon Tha Sai Luat, where Ador and Makhin La worked as labourers.
On Wednesday, Thun Mit, wife of Mr Suay, was detained in Mae Sot district in connection with the murder of the family.
Thun Mit's arrest prompted Pol Gen Chalermkiat Sriworakhan, deputy national police chief, to on Thursday fly to Tak to question the suspect himself.
The suspect had so far admitted that her husband committed the murder but denied that he killed all four victims, said the source.
She told police that the murders happened after a heated argument between the victims and her husband over the latter's drinking habits, which the woman claimed had angered her husband and drove him to commit the murders, said the source.
The investigators, however, weren't convinced by what Thun Mit said.
Makhin La's daughter, who does not live with the family, said her mother was upset with the neighbours for gossiping about her sister and decided to go and confront the neighbours.
The daughter said her mother called her to come home, but when she arrived, she found her family was already dead.
The bodies of the victims were cremated at a crematorium in Mae Sot district, where the victims' relatives and friends from Myanmar showed up to pay their last respects.
