Authorities say the man arrested Saturday for the August 17 bombing at Bangkok's Erawan shrine might be linked to a network that provided fake passports to migrants.
"I don't suspect one person, I suspect many people," Thai police said today. Officials are also offering a reward for information leading to the capture of suspects in the attack that killed 20.
Prime Minister Prayuth Chan-ocha described the bombing, which killed at least 22 people, as "the worst incident that has ever happened in Thailand."
Today's explosion comes after Monday's attack in central Bangkok killed at least 20 people and injured more than 100. No group has yet claimed responsibility.
Thai police say at least 16 people were killed by a pipe bomb at the Erawan shrine, a religious site and tourist attraction located in Bangkok’s shopping district.