Nearly three fourths of the security cameras along the getaway path taken by the main suspect in last week's devastating Bangkok bombing were broken, Thailand's police chief said in frustration on Monday. 

"For example, the perpetrator was driving away - escaping -  and there are CCTV cameras following him. Sometimes there were 20 cameras on the street but only five worked," Somyot Poompanmoung explained. "Fifteen were broken, for whatever reason, they didn't work."