Erawan Shrine

Authorities are confident that the two men in custody, identified as Adem Karadag and Mieraili Yusufu, are the culprits responsible for the bombing at the Erawan Shrine on Aug. 17 that killed 20 people and injured more than 120, said National Police Chief Somyot Poomphanmuang. 

Police are seeking at least 15 other people they believe are tied to the case.

Prime Minister Prayuth Chan-ocha said Friday that he did not know whether China would hand over the suspect if or when he was arrested. Police have suggested a man carrying a Chinese passport in the name Abudureheman Abudusataer may have directed the bombing of the Erawan Shrine.

The man, also known by the nickname Izan or Ishan, reportedly left Thailand on Aug. 16 for Bangladesh and then China.

The bombing took place two weeks ago.

National police spokesman Prawuth Thavornsiri said he was certain the two were part of a group responsible for the Aug. 17 blast at the Erawan Shrine in central Bangkok that killed 20 people, more than half of them foreigners.