Bangkok, Thailand (CNN)[Breaking news update published at 9:02 a.m. ET]
A Thai motorbike taxi driver who believes he picked up the chief suspect in the bombing of Bangkok's Erawan Shrine shortly after the blast said the man appeared calm and spoke an unfamiliar language on his cellphone.
Driver Kasem Pooksuwan, 47, told CNN he did not think the man -- whom he dropped off at a central city park after a short ride -- was Thai.
"When I dropped him, he still appeared very calm just like normal customer. He seemed not in a hurry at all," Kasem said.