Washington received no request from Manila to alter cooperation

The official, who asked to remain unnamed, told AFP "we still have not received any requests through official channels to alter our assistance to or cooperation with the Philippines."

Duterte met his Chinese counterpart Xi Jinping in Beijing, where he said Thursday, "I announce my separation from the United States."

The Philippines leader is in China for a four-day trip seen as confirming his tilt away from Washington and towards Beijing's sphere of influence.