Thaksin said the bombings could be related to the southern violence because they were similar to explosions that killed four people and wounded dozens last September in Hat Yai, the south's commercial hub near the three Muslim-dominated southern provinces rocked by the insurgency.
"I used to warn high-ranking officials that if we can't stop them ... they will go to Bangkok," Thaksin wrote.
Several analysts noted the military itself was a possible suspect in the bombings, perhaps aiming to demonize the former prime minister.
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