The U.S. Embassy sent out an emergency message Friday to inform American citizens in Manila of a possible threat against them.
"The U.S. Embassy advises American citizens in the Philippines that a threat against American citizens in metropolitan Manila, specifically the Pasay City neighborhood, has been detected by reliable security forces. This threat remains in effect until October 10, 2012," the message said.
The advisory however did not specify the nature of the threat.
Tina Malone, U.S. Embassy information officer, told Yahoo! Southeast Asia that the message was sent out to inform the American community of a "possible threat" but that the source of the threat is "not known at this time."
U.S. Ambassador Harry Thomas Jr. has ordered heightened security in U.S. government facilities in Manila, she said.
Meanwhile, American citizens in Manila have been advised to "exercise extreme caution in their daily routine and to maintain extra awareness regarding their own security" and to maintain a low profile.
The U.S. Embassy also advised citizens to vary their travel routes and schedules, and to "consider cancelling any American gatherings, celebrations or observations that could be construed as American events."
Perceived security concerns should be reported to Philippine authorities, the U.S. Embassy said.
But Colonel Arnulfo Burgos Jr, Armed Forces of the Philippines spokesman, said the military has "not monitored any specific threat."
He added the AFP will coordinate with the Philippine National Police and other law enforcement agencies "and further intensify our intelligence collection and monitoring efforts."
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