Under pressure to solve Bangkok bomb attack, police interview driver

People ride their motorcycles past a digital billboard showing a sketch of the main suspect in Monday's attack on Erawan shrine, in Bangkok, Thailand, August 23, 2015. REUTERS/Chaiwat Subprasom

BANGKOK (Reuters) - Police on Tuesday questioned a taxi driver who may have driven the main suspect away from the area of last week's deadly attack in Bangkok, as forensic experts struggle to unearth vital evidence in Thailand's worst ever bombing.

Broken security cameras along the chief suspect's getaway route and a lack of sophisticated equipment has hampered the investigation into the Aug. 17 blast that killed 20 people, more than half of them foreigners.