The right-hand man of a police inspector allegedly involved in online gambling was found hanged while in custody on Sunday night.
Pakphum Saengnil, 36, was arrested earlier on Sunday evening by Sa Kaeo Provincial Police and was later placed in a cell alone at Klong Luek police station at about 8pm.
It was reported that Pakphum was a close aide of Pol Lt Col Wasawat Makurasakul, also known as Inspector Sua, who allegedly owned 27 gambling websites and was wanted on an arrest warrant issued by the Department of Special Investigation for colluding to organise illegal online gambling and money laundering.
Police planned to take Pakphum to Bangkok on Monday morning. But CCTV footage reportedly showed the man hanging himself with a blanket around 10pm-11pm.
Klong Luek superintendent Pol Col Pattanachai Pamornpibul on Tuesday said investigators were told to question officers on duty at the station that night.