The United States said that security at Manila airport, the main airport in the Philippines, does not meet international standards and recommended its citizens to increase caution when traveling through this facility.
The alert was issued by the Department of Homeland Security after security experts from the administration of the Transportation Security Administration reviewed the conditions at Ninoy Aquino International Airport.
The agency said the airport "does not maintain or carry out effective security consistent with the standards of the International Civil Aviation Organization (ICAO)," in a statement posted on the US embassy portal in Manila.
"Exercise greater caution when traveling to or from the Ninoy Aquino International Airport," the embassy advised on its website.
The Department of Homeland Security said the Philippine airport serves as the last point of departure for flights to the US and announced that it has instructed airlines covering routes between the two countries to notify the alert to passengers.
The Philippine government said today that it has taken note of the US comments but indicated that the latest audits by the ICAO found that security at the airport was "generally satisfactory".
"Guaranteeing the security of public transport is one of the crucial interests of our government in view of the terrorist threat," said presidential spokesman Salvador Panelo.
The spokesman added that the implementation of any of the US recommendations, such as the purchase of X-ray equipment, metal detection and alarm systems, "will take some time."