The explosion site was a bus stop in front of Big C supermarket, according to the Erawan emergency centre.
Of the injures, the bus driver and a victim are in serious condition.
The bomb exploded shortly after voting ended in a parliamentary by-election.
InIndonesia , landslides and floods claimed at least 21 lives andinjured seven others on the same day in the eastern province ofMaluku .
Prolonged torrential rains caused flooding in SouthKalimantan province, drowning at least three people, causing threeothers missing, affecting the lives of about 3,000 households anddamaging hundreds of hectares of crops.
Meanwhile in Japan , arescue helicopter crashed on July 25 in the city of Chichibu ,Saitama prefecture, killing five people.
The helicopter fordisaster prevention belonging to the Saitama prefectural government wason an operation to rescue a member of a nine-climber party on amountain, according to police.
An explosion at a petrochemical factory on Iran 's largest oil terminal has killed four people.
Iran 's official news agency said on July 25 that high pressure inthe central boiler of the factory led to an explosion and fire at thefacility on Khark island in the Persian Gulf./.