Police spokesman Lt. Gen. Prawuth Thavornsiri shows a photo of one of three men that Thai authorities have issued new arrest warrants in connection with the bombing case, bringing the total number of wanted suspects to seven during a press conference in Bangkok, Thailand, Tuesday, Sept. 1, 2015.
BANGKOK, THAILAND - AUGUST 17: Emergency services workers collect evidence at the scene of an explosion on August 17, 2015 in Bangkok, Thailand. A large explosion believed to be from a bomb has happened in central Bangkok this evening with early reports suggesting 12 people have died and at least 20 more have been injured.
A police man walks past the scene of an explosion on August 17, 2015 in Bangkok, Thailand. A large explosion believed to a bomb has hit central Bangkok this evening with early reports suggesting at least 16 people have died and scores more have been injured.
Police examine debris in front of the Erawan Shrine at Rajprasong intersection in Bangkok, Thailand, Tuesday, Aug. 18, 2015, as investigations continue the morning after an explosion. Police combed through shattered glass and other debris Tuesday from a bomb blast in central Bangkok, trying to determine who set off the most devastating single attack in the capital's recent history.
This Aug. 17, 2015, image, released by Royal Thai Police spokesman Lt. Gen. Prawut Thavornsiri shows a man wearing a yellow T-shirt near the Erawan Shrine before an explosion occurred in Bangkok, Thailand. Prawut said he believes the man is a suspect in the blast that killed a number of people at a shrine in downtown Bangkok on Monday night.
A policeman photographs debris from an explosion in central Bangkok, Thailand, Monday, Aug. 17, 2015. A large explosion rocked a central Bangkok intersection during the evening rush hour, killing a number of people and injuring others, police said.