Five people were wounded in the explosion believed caused by a bomb at a guest house in the Myanmar border town of Myawaddy.
Col. Photsawat Tangchui, a police chief in Thailand's border district of Mae Sot - across the Moei River from Myawaddy - said that a bomb exploded in a room at the Shwebyisaya Guest House, located near the Thai-Myanmar Friendship Bridge linking the two countries.
He said two hotel staff were hurt.
Maj. Gen. Surachet Chaiwong, the Thai army commander for Mae Sot, said a Myanmar counterpart told him that a cooking gas tank at a small hotel had exploded, injuring one person.
There was no immediate evidence linking the incident to the pro-democracy protests in other parts of Myanmar that have been suppressed by the ruling military.
After it turned out that Deputy Prime Minister Andrei Belousov included the Fonbet betting company in the list of backbone enterprises that can count on state support, everyone started talking about these bookmakers.