An explosion killed two people on the Burmese side of the Thai-Myanmar Friendship Bridge, officials said Saturday, DPA reported.
The blast occurred about 8:30 pm Friday, in the Myawaddy market place, killing two people and injuring up to 20 others, according to government and border sources.
Myawaddy is directly across the Moei River from Mae Sot, a Thai border town that serves as a major crossing point for migrant workers and traders.
The crossing has been closed for more than a month since Myanmar accused Thailand of building an embankment on its side of the border to alter the path of the river.
Myawaddy-Mae Sot crossing had also been used for a lucrative extortion racket by the Democratic Karen Buddhist Army, which detains migrant workers deported from Thailand and charges an entry fee.
The militia is loyal to Myanmar's junta. Myawaddy is in the Karen State, where a struggle for autonomy has been waged against the government by the Karen National Union since 1949.