The 2013 Southern Thailand bombings were a series of bombings that took place in Danok, Padang Besar and Sadao, Songkhla Province, Thailand near the Malaysian border on December 22, 2013.
The road checkpoint is located about 1 km outside town on the road to Sadao.
Neighboring districts are (from the south clockwise) Mueang Satun, Tha Phae and Khuan Kalong of Satun Province, Sadao of Songkhla Province, and the state Perlis of Malaysia.
Historically Sadao is part of Kedah in the district of Changlun, means 'the falling of an elephant' in Thai.
Sadao Watanabe worked in the mingei (folk art) tradition, synthesizing Buddhist figure portrayal and Western Christianity in his unique Biblical prints.