Two explosions boomed through a busy neighbourhood in the Thai capital today, police said, but it was not immediately clear what caused the blasts or whether there were any fatalities.
A picture posted on Twitter purportedly showed a wounded man laying on a sidewalk strewn with broken glass outside a Thai school, his legs apparently ripped off in one of the explosions.
Several Thai television stations reported the wounded man was carrying explosives at the time.
They said an identification card found in a satchel nearby indicated he may be of Iranian descent.
The reports could not immediately be confirmed, however. Police Col. Sittiphab Baiprasert told The Associated Press the blasts occurred about 100 yards apart on Sukhumvit Soi 71, a multilane thoroughfare with businesses and apartment blocks.
He gave no other details. Local media said traffic had been halted while authorities investigated.
Thailand has rarely been a target for foreign terrorists, although a domestic Muslim insurgency in the country's south has involved bombings of civilian targets.
Last month, a foreign suspect with alleged links to Hezbollah militants led Thai police to a warehouse filled with more than 8,800 pounds (4,000 kilograms) of urea fertilizer and several gallons of liquid ammonium nitrate.
Israel and the United States warned their citizens to be alert in the capital, but Thai authorities said Thailand appeared to have been a staging ground but not the target of any attack.
Yesterday, bombs targeted Israeli diplomats in India and Georgia.
The attack in India wounded four people. Israel blamed that attack on Iran or its proxies, claims Iran denied.