MANILA, Philippines, Mar 04, 2003 (AP WorldStream via COMTEX) -- A powerful explosion ripped through the waiting area of an airport in the southern Philippines on Tuesday, authorities said. Authorities said they saw many people injured and killed, but could not provide exact figures. Local civil defense chief Susan Madrid said the explosion occurred at the Davao airport on the southern island of Mindanao. Copyright 2003 Associated Press, All rights reserved