A series of blasts across Thailand has targeted the tourist towns of Hua Hin, Phuket among other locations, leaving at least three dead and many injured.
They struck just hours after
hit the Hua Hin resort, close to Bangkok, killing one. The town was hit again by multiple blasts on Friday.
No group has said it carried out the attacks, but suspicion is likely to fall on separatist insurgents.
The timing is sensitive as Thais mark a long weekend for the queen's birthday.
More reports of blasts are still coming in on Friday in what appears to be a co-ordinated series of attacks, but so far the locations include:
- Two blasts in Hua Hin where one person has died
- Two blasts in Surat Thani where one person has died
- Two blasts in Phuket where it is unclear how many are injured
- One blast in Trang where one person has died
- One bomb has been defused by authorities
"The bombs are an attempt to create chaos and confusion," PM Prayuth Chan-ocha said to reporters. "We should not make people panic more."
The BBC's Jonathan Head in Bangkok says that if it turns out insurgents are behind these attacks it would mark a significant change of tactics after a 12-year conflict which has killed more than 6,000 people, but has never targeted tourists.
The choice of Hua Hin as a target is also significant, our correspondent adds, being known as a royal city and the king's favoured residence outside Bangkok.
Small improvised bomb attacks have frequently been used in Thailand at times of political unrest, but since the military took power in a coup in May 2014 such attacks have been extremely rare.
This comes just days before the one-year anniversary of the bomb blast at the Erawan shrine in Bangkok that killed 20 people.
Last week Thais voted in a referendum which approved a new constitution that will strengthen the military's influence in politics for many years.