BANGKOK, Aug 19 : A man suspected of planting a deadly bomb in Bangkok is part of a wider "network", Thailand's top policeman said on Wednesday, as monks led prayers and reopened the shrine where 20 people were killed.
The blast struck on Monday evening as worshippers and tourists crowded into the Erawan shrine in the Thai capital's commercial heart, but with no claim of responsibility the motive and identity of the culprit remain a mystery.
The unprecedented attack left at least 11 foreigners dead, with visitors from Britain, China, Hong Kong, Indonesia, Singapore, and a family from Malaysia among the victims.
Another 68 people remain in critical condition after a blast that shredded bodies and incinerated motorcycles at one of the city's busiest intersections, sending a shockwave through the country's pivotal tourist industry.
"It's a network," police chief General Somyot Poompanmoung told reporters without elaborating, a day after CCTV footage emerged showing a suspect leaving a backpack moments before the blast struck.
"We believe there must be people helping him, Thai people," he added, appearing to rule out the action of a lone wolf attacker.
Police had initially said a second explosion at a Bangkok pier on Tuesday that caused no injuries may also be linked, deepening fears for residents as police conceded they do not know who was responsible.
But on Wednesday Somyot said the second attack might also be a "copycat" and that police were keeping all options open.
Thai police have now offered a one million baht ($28,000) reward for information that leads to the arrest of the main suspect.
Widely circulated video of the suspect, apparently young and slightly built, and sporting glasses and shaggy dark hair, has prompted social media chatter that he could be a foreigner. ?AFP