Metropolitan Police Bureau deputy chief Pol Maj Gen Sompong Chingduang urged the three suspects – identified as Methawin Lertpittayakul, 31, Pakorn Thammarat, 34, and Anucha Pinijpolm 27 – to surrender to police before they were arrested.
Sompong told reporters after the case investigators’ meeting at the Paholyothin precinct that so far arrest warrants had been issued for seven individuals.
One suspect, named as Natthapong Thanyatoon, 33, remains at large.
The six in custody are Narongchai Sawasdiphol, 32, Chawalit Charoenpol, 31, Surasak Srithawong, 35, Pongsak Pitasiripan, 31, Krissada Atthawet, 30, and Sarayuth Ritchainuwat, 31.
Except for Natthapong and Sarayuth, the suspects were current and former employees of the victim, gold and jewellery exporter Pattharit Taerattanachai.