Police Official Niyom Dumla-iad said the blast victims includes three women, who were killed when a motorcycle bomb exploded late Friday night near a karaoke bar in the border town of Padang Besar.
Three other people were also injured and the explosion damaged the bar and nearby houses, cars and motorcycles.
Arson has been blamed for the deaths of three others at a shop in Sungai Kolok, another border town, the Associated Press news agency reported. Eight other people were wounded by an improvised bomb hidden in a planter in front of a hotel.Three of those hurt were women from Laos.
More than 5,000 people in Thailand's southernmost provinces have been killed since a separatist uprising erupted in 2004 in the largely Malay Muslim south. The fighters have not issued specific demands but are generally believed to be fighting for an independent state.
Thai border towns have a reputation for a nightlife and the attacks came during the Muslim holy month of Ramadan.
Police Colonel Kong-at Suwannakam said attackers suspected to be separatists also threw giant firecrackers at restaurants and set fire to two other shops in Sungai Kolok, leaving eight people wounded.
Source: Aljazeera