Royal Thai Police Assistant Commissioner General Jakthip Chaijinda said nine crew members of fishing boat Sor Nattaya 7 were held earlier and initially charged with breaching the Immigration Act.
Songkhla police investigators and Attorney General representatives Individually interrogated the nine men and took them to point the spot on board where each was assigned to work. Seven of them confessed to the charges.
They claimed that they killed the two Indonesians on the orders of the trawler captain whom they identified as Opas Charoenporn, who remains at large.
The Indonesian naval officers reportedly boarded the Thai trawler for an inspection when the incident took place.