Sketch of bomb suspect released

Thai police released a sketch on Wednesday of the main suspect in a bomb blast in Bangkok that killed at least 20 people, more than half of them foreigners.

The sketch shows a fair-skinned man with thick, medium-length black hair, a wispy beard and black glasses. It was unclear whether the man was Thai or a foreigner.

On Tuesday, a day after the bombing at a religious shrine in Bangkok's busy Ratchaprasong commercial district, police released grainy closed-circuit television footage of a young man wearing a yellow T-shirt.