A Polish man, who police alleged murdered and dismembered his Ukrainian girlfriend, was detained on Tuesday at the Bangkok South Criminal Court after more than an hour of interrogation.
Pol Col Arthit Rojpaitoon, Wat Phaya Krai Police Station superintendent, said Jan Jerzy Lagoda-Filippow, 25, was arrested in Sa Kaeo province's Aranyaprathet district on Monday night.
He was transferred to Wat Phaya Krai Police Station in Bangkok at 4am on Tuesday.
The suspect was arrested after allegedly murdering and dismembering the body of Alona Savchenko, 25, with a handsaw at a high-rise condominium in Bang Kholaem district after arriving as a tourist on April 29.
Condominium staff later found her remains. Mr Lagoda-Filippow was later arrested following a tip-off from a taxi driver.