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A handout photo from the Royal Thai police and released on August 29, 2015 shows Turkish national Adem Karadag being detained at a police station in Bangkok. Thai police said they have detained a foreign man on August 29, "likely involved" with a bomb attack in Bangkok last week that killed 20 people and wounded scores more. AFP PHOTO / ROYAL THAI POLICE --EDITORS NOTE -- RESTRICTED TO EDITORIAL USE MANDATORY CREDIT "AFP PHOTO / ROYAL THAI POLICE" NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS - NO ARCHIVES--STR/AFP/Getty Images
A handout photo from the Royal Thai police and released on August 29, 2015 shows Turkish national Adem Karadag being detained at a police station in Bangkok. Thai police said they have detained a foreign man on August 29, "likely involved" with a bomb attack in Bangkok last week that killed 20 people and wounded scores more. AFP PHOTO / ROYAL THAI POLICE --EDITORS NOTE -- RESTRICTED TO EDITORIAL USE MANDATORY CREDIT "AFP PHOTO / ROYAL THAI POLICE" NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS - NO ARCHIVES--STR/AFP/Getty Images

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    Thai police arrest suspect in Bangkok bombing

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Thai police arrest suspect in Bangkok bombing

CNN's Saima Mohsin reports from outside the building where the suspect was arrested.

Thai police arrest suspect in Bangkok bombing

CNN's Saima Mohsin reports from outside the building where the suspect was arrested.