`` We are still trying to determine what kind of bomb was used , '' Bonifacio said . A police chief says the bomb might have been planted under a seat . Police are unable to determine the type of bomb . The bomb blew a hole through the side of the seat . Makati City is Manila 's financial district .
A police chief says the bomb might have been planted under a seat . Police are unable to determine the type of bomb . The bomb blew a hole through the side of the seat . Makati City is Manila 's financial district .