People hold candles for victims of last Monday's deadly blast, at the Erawan shrine in Bangkok
People hold candles for victims of last Monday's deadly blast, at the Erawan shrine in Bangkok, Thailand, August 24, 2015. Police said on Monday the trail had gone cold in the hunt for a bomber a week after 20 people were killed in Thailand's worst ever bomb attack, and they were unsure if the chief suspect was still in the country. REUTERS/Chaiwat Subprasom