After China said on Saturday that it would return the unnamed underwater vehicle, Trump tweeted that Beijing should keep what it "stole".
Defense Secretary Delfin Lorenzana who visited the 6th Army Division said the Philippine government is considering to require the U.S. military to inform the country first of any surveillance movement in disputed waters in Scarborough Shoal in the South China Sea (West Philippine Sea).
"Upon confirming that the device was a USA underwater drone, the Chinese side chose to transfer it to the United States side in an appropriate manner", Chinese Defense Ministry spokesman Sr.
The Chinese officials said that the vessel was retrieved and analyzed to maintain the safety of passing vessels. China considers the self-governing island its own territory to be recovered by force if it deems necessary.
The Yomiuri ShimbunThe hazardous undertaking, which will increase tensions in the South China Sea, demonstrates that China's unlawful actions are becoming ever more apparent.
The incident was "inconsistent with both worldwide law and standards of professionalism for conduct between navies at sea", the Pentagon statement said. A statement from the Chinese Ministry of Defense said the transfer was made after "friendly consultations" with the U.S.
The Chinese version of events is markedly different from the Pentagon's - US officials say the Chinese ship was following the American vessel, and that the drone's origin wasn't in doubt.
The U.S. has "called on Chinese authorities to comply with their obligations under global law and to refrain from further efforts to impede lawful U.S. activities", the statement said. Trump later said he did not feel "bound by a one-China policy" unless the USA could gain trade or other benefits from China.
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This story was first published on CNN.com, "US says China will return underwater drone; Trump slams Beijing over incident". Beijing pledged to return the drone soon after it was captured to avoid another chill in relations. Philippine Defense Secretary Delfin Lorenzana said Monday that while the matter should be resolved between China and the us, it was "very troubling" because it occurred within the country's 200-nautical-mile exclusive economic zone.
The statement called on China "to refrain from further efforts to impede lawful US activities".
The U.S. said China's "unlawful seizure" came in worldwide waters. "We would like it back, and we would like this not to happen again", Davis told reporters.
"The handling of this incident shows that the Chinese and U.S. militaries have quite smooth communication channels. Regarding the Sino-US relationship, he challenged the one-China policy and despised the principles which both countries have adopted to manage crises", the daily said.
Despite Trump's more aggressive tone, he has given no clear policy on how he plans to deal with the dispute in the South China Sea.
Trump has also raised questions about the most sensitive part of the US-China relationship: whether Washington would stick to its almost four-decades-old policy of recognising that Taiwan is part of "one China".
Are Trump's America and Xi's China on a collision course?