The Royal Thai Police said that 3 kilograms (6.6 lb) of TNT had been stuffed in a pipe and left under a bench near the outer rim of the grounds surrounding the shrine, and that an electronic circuit suspected to have been used in the attack was found 30 metres (98 ft) from the scene.[2][not in citation given]
No one has yet claimed responsibility for the attack.[10] The attacks are thought to have targeted Thailand's tourism and economy,[2] but there has been a range of inconsistencies in the statements of Thai authorities about those arrested and the reasons for the attack. The Thai government has at times suggested the bombers acted to avenge a crackdown on their human trafficking network, to take revenge for Thailand's deportation of a group of Uighurs back to China in July 2015, to strike a blow for the insurgents fighting the Thai government in the deep south, or for reasons related to Thailand's domestic politics. The government has implicated a range of other suspects in the bombing, mostly Thai opponents of the military regime.[11]
The site of the bombing had been cleaned, and the crater paved over with cement, by 19 August.[12]