Unidentified gunmen opened fire at a van along EDSA highway in Metro Manila's Mandaluyong City.
Local police said a woman, who sustained serious injuries from the shootout, is under medical care.
Checkpoint security checks in Metro Manila have intensified as the election gun ban is currently in place.
Officials said they are yet to determine the identity of the suspects and their motive for the attack.

Three injuries and material damage to a university building in Bahrain
Explosion hits US embassy in Oslo, causing minor damage, thick smoke
Four killed in Beirut hotel strike, Israel says it targeted Iranian commanders
Drone attacks cause major fire at Kuwait International Airport
Israel warns Lebanon of 'heavy price' as week's death toll nears 300
