The Department of Special Investigation (DSI) has issued a summons to a key suspect in a major fuel adulteration investigation, ordering him to report and hear formal charges on June 8.
A DSI source said Surat Sukcharoenkraisri, the younger brother of businessman Somboon Sukcharoenkraisri, known as "Sei Tue Cosmo", has been ordered to appear before investigators over alleged involvement in illegal fuel blending and overpricing linked to Trillion Petroleum Trading Co Ltd in Ang Thong.