Thai authorities have arrested a Thai man suspected of involvement in the deadly August 17 bombing at Erawan Shrine in downtown Bangkok, local media reported Thursday.

Kamarudeng Saho, the third suspect was apprehended in Sungai Kolok district of Thailand's southern province of Narathiwat on Tuesday, Bangkok Post reported.

He was taken to Bangkok and detained at the 11th Army Circle headquarters on Wednesday.

Investigators found out the man had contacted Wanna Suansan, one of eight wanted suspects in the Erawan Shrine incident, which killed 20 people and injured more than 120 others, and a subsequent bombing at the Sathorn pier, which caused no casualties, police spokesman Prawut Thawornsiri was quoted as saying. (Xinhua)