A series of blasts hit three of the most popular tourist resorts in southern Thailand on Thursday and Friday, killing two people and injuring dozens, just days after the country voted to accept a military-backed constitution in a referendum.
Twin blasts hit the upscale resort of Hua Hin, around 200 kilometres (125 miles) south of Bangkok, on Friday morning just hours after two bombs killed one person and wounded 21 late on Thursday.
One person died and three people were wounded in one of the Friday morning blasts near a clock tower in Hua Hin, deputy police spokesman Police Colonel Krisana Pattanacharoen told reporters in Bangkok.
The latest blasts came after a bomb exploded near a bar in Hua Hin late on Thursday, killing one Thai woman and wounding 21 people, Krisana said.
Police were still investigating whether and how the various blasts were connected, another deputy spokesman, Piyaphand Pingmuang, told reporters.
Nine of those injured in Thursday night's twin blasts in Hua Hin were foreigners, Hua Hin deputy police chief Samer Yousamran said.
Those twin explosions were detonated by mobile device, police said. The first took place twenty minutes earlier and about 50 metres from the second, but injured nobody.
Police have no immediate indication of a possible motive, Samer said.
Two small bombs exploded in the tourist beach town of Patong on Phuket island and two more in Phang Nga, another tourist region north of Phuket, local police said. One Thai man was lightly wounded in Patong, police said.
Thai police had planned a news conference on the attacks on Friday, but delayed it after the latest reports about the blasts in Phuket came in.