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Police link suspect in deadly Bangkok bombing to previous explosions in Thailand

  • Thai National Police Chief Somyot Poomphanmuang, center, Deputy Police Chief Jakthip Chaijinda, left, and Police spokesman Prawut Thavornsiri sit in front of a chart of suspect bombers during a press conference in Bangkok, Thailand, Monday, Sept. 28, 2015. Police have given their most detailed explanation yet of who they believe was behind last month's deadly bombing in Bangkok, for the first time publicly linking one of the suspects to previous explosions. Authorities have said they believe the Aug. 17 bombing, which killed 20 people and injured more than 120, was carried out by a people smuggling gang seeking revenge for having their operation curbed. (AP Photo/Sakchai Lalit)

    Thai National Police Chief Somyot Poomphanmuang, center, Deputy Police Chief Jakthip Chaijinda, left, and Police spokesman Prawut Thavornsiri sit in front of a chart of suspect bombers during a press conference in Bangkok, Thailand, Monday, Sept. 28, 2015. Police have given their most detailed explanation yet of who they believe was behind last month's deadly bombing in Bangkok, for the first time publicly linking one of the suspects to previous explosions. Authorities have said they believe the Aug. 17 bombing, which killed 20 people and injured more than 120, was carried out by a people smuggling gang seeking revenge for having their operation curbed. (AP Photo/Sakchai Lalit)  (The Associated Press)

  • Thai National Police Chief Somyot Poomphanmuang, center, Deputy Police Chief Jakthip Chaijinda, left, and Police spokesman Prawut Thavornsiri sit in front of a chart of suspect bombers during a press conference in Bangkok, Thailand, Monday, Sept. 28, 2015. Police have given their most detailed explanation yet of who they believe was behind last month's deadly bombing in Bangkok, for the first time publicly linking one of the suspects to previous explosions. Authorities have said they believe the Aug. 17 bombing, which killed 20 people and injured more than 120, was carried out by a people smuggling gang seeking revenge for having their operation curbed. (AP Photo/Sakchai Lalit)

    Thai National Police Chief Somyot Poomphanmuang, center, Deputy Police Chief Jakthip Chaijinda, left, and Police spokesman Prawut Thavornsiri sit in front of a chart of suspect bombers during a press conference in Bangkok, Thailand, Monday, Sept. 28, 2015. Police have given their most detailed explanation yet of who they believe was behind last month's deadly bombing in Bangkok, for the first time publicly linking one of the suspects to previous explosions. Authorities have said they believe the Aug. 17 bombing, which killed 20 people and injured more than 120, was carried out by a people smuggling gang seeking revenge for having their operation curbed. (AP Photo/Sakchai Lalit)  (The Associated Press)

  • Reporters and photographers take photos of a chart of suspect bombers after a press conference in Bangkok, Thailand, Monday, Sept. 28, 2015. Police have given their most detailed explanation yet of who they believe was behind last month's deadly bombing in Bangkok, for the first time publicly linking one of the suspects to previous explosions. Authorities have said they believe the Aug. 17 bombing, which killed 20 people and injured more than 120, was carried out by a people smuggling gang seeking revenge for having their operation curbed. (AP Photo/Sakchai Lalit)

    Reporters and photographers take photos of a chart of suspect bombers after a press conference in Bangkok, Thailand, Monday, Sept. 28, 2015. Police have given their most detailed explanation yet of who they believe was behind last month's deadly bombing in Bangkok, for the first time publicly linking one of the suspects to previous explosions. Authorities have said they believe the Aug. 17 bombing, which killed 20 people and injured more than 120, was carried out by a people smuggling gang seeking revenge for having their operation curbed. (AP Photo/Sakchai Lalit)  (The Associated Press)

Police have given their most detailed explanation yet of who they believe was behind last month's deadly bombing in Bangkok, for the first time publicly linking one of the suspects to previous explosions.

Authorities have said they believe the Aug. 17 bombing, which killed 20 people and injured more than 120, was carried out by a people smuggling gang seeking revenge for having their operation curbed.

While a presentation to the media Monday mostly summed up information released in recent days, National Police Chief Somyot Poomphanmuang said that two different groups may have been involved, and that a Thai suspect still at large had been tied to bombings in 2010 and 2014.

The 2010 bombing was loosely linked to "Red Shirt" activists who earlier that year staged militant anti-government protests.