Thai police say bombers may have left the country

Despite new surveillance video footage that may offer a possible clue to the bombing in central Bangkok that killed 20 people, Thai police said the perpetrators may have already fled the country.

Surveillance video leaked to Thai media shows a man in a blue shirt placing a bag on a riverside walkway, then kicking it into the water on Monday night shortly after the explosion several miles away at the Erawan shrine.

About 18 hours later, at 1pm local time on Tuesday, an explosion took place at the same spot near a busy pier, causing no casualties.