MSNBC host Joe Scarborough lashed out at President Trump on Saturday, saying the president was wrong to attack the mayor of San Juan for "poor leadership" amid hurricane recovery efforts on Puerto Rico.

"Poor leadership would be hiding at a country club golfing while fellow Americans are suffering and dying," Scarborough said. "She's not doing that. You are."

Poor leadership would be hiding at a country club golfing while fellow Americans are suffering and dying. She's not doing that. You are. https://t.co/N4wJg5nrGQ — Joe Scarborough (@JoeNBC) September 30, 2017

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Scarborough, a vocal Trump critic, also shared tweets from fellow "Morning Joe" co-host Mika Brzezinski on Saturday saying that Trump is "not fit."

First the President attacks an American hero fighting for his life, now he attacks AMERICANS suffering through 2017's Katrina. #hesnotfit — Mika Brzezinski (@morningmika) September 30, 2017

Trump went after San Juan Mayor Carmen Yulín Cruz in tweets early Saturday after she criticized the federal government for its delayed efforts to provide aid to the suffering U.S. island territory.

...Such poor leadership ability by the Mayor of San Juan, and others in Puerto Rico, who are not able to get their workers to help. They.... — Donald J. Trump (@realDonaldTrump) September 30, 2017

...want everything to be done for them when it should be a community effort. 10,000 Federal workers now on Island doing a fantastic job. — Donald J. Trump (@realDonaldTrump) September 30, 2017

Trump's tweets appeared to be in response to criticism from Cruz the previous day.

"We are dying, and you are killing us with the inefficiency and the bureaucracy," Cruz said at a Friday news conference, demanding more assistance from the federal government.

"So I am done being polite. I am done being politically correct. I am mad as hell."

A number of Democratic lawmakers on Saturday slammed Trump for targeting the Puerto Rico official while spending the weekend at his golf club in Bedminster, N.J.

Trump was slated to hold a series of phone calls from his golf club on Saturday related to the hurricane response, including with Puerto Rico Gov. Ricardo Rosselló and Resident Commissioner Jenniffer González-Colón.

At least 16 people had died in Puerto Rico as of Friday, according to officials, though the number was expected to climb as recovery efforts continued.