Police were speeding up evidence collection to seek a warrant for the arrest of Santi Supa-apiradeepailin for allegedly murdering a Thai couple in Taiwan.
Authorities believe Santi, 35, is hiding in Thailand.
The Crime Suppression Division planned to seek the arrest warrant from the Criminal Court after it had received information including forensic evidence related to the cruel murder from Taiwan.
Police already questioned the fathers of the dead – which included a pregnant woman pregnant with twins – and intended to present evidence to apply for the arrest warrant today.
Detectives found that Santi had left for Taiwan on April 6 and returned to Thailand’s Suvarnabhumi Internatinoal Airport on June 9. Then he boarded another plane to Chiang Mai Province and travelled on a taxi to his home in Chai Prakan District there.
A relative on a vehicle picked him up at home and the vehicle went to Uttaradit and Phitsanulok provinces. Police believed that Santi remained in Thailand.
On Sunday, Pol. Col. Kissana Phathanacharoen, deputy spokesman for the Royal Thai Police Office, said the murder might have resulted from a lending conflict and the suspect and the victims had worked in Taiwan and been acquaintances.