President Trump on Thursday warned that this administration's response to hurricane-ravaged Puerto Rico cannot last "forever."

"We cannot keep [the Federal Emergency Management Agency], the Military & the First Responders, who have been amazing (under the most difficult circumstances) in P.R. forever!" Trump wrote in a series of tweets.

He added that the island territory's existing debt and infrastructure issues compounded problems.

"Puerto Rico survived the Hurricanes, now a financial crisis looms largely of their own making." says Sharyl Attkisson. A total lack of — Donald J. Trump (@realDonaldTrump) October 12, 2017

...accountability say the Governor. Electric and all infrastructure was disaster before hurricanes. Congress to decide how much to spend.... — Donald J. Trump (@realDonaldTrump) October 12, 2017

...We cannot keep FEMA, the Military & the First Responders, who have been amazing (under the most difficult circumstances) in P.R. forever! — Donald J. Trump (@realDonaldTrump) October 12, 2017

His tweets come at a time when only about 10 percent of the island's 3.4 million residents have electricity, Puerto Rico's government said Tuesday.

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Guaynabo, a city the president and first lady Melania Trump visited, is also reportedly still without power.

“Flashlights, you don’t need them anymore. You don’t need them anymore,” the president said as he passed them out to city residents.

He also tossed paper towels into the crowd of people gathered around him during the visit.

The Trump administration faced criticism for its initial response as Puerto Rican lawmakers begged him to help deal with the scarcity of basic necessities like food and clean water.