President Trump doubled down on his attacks of San Juan Mayor Carmen Yulín Cruz on Saturday, saying the federal government's recovery efforts will speak louder than her criticism.

"Results of recovery efforts will speak much louder than complaints by San Juan Mayor. Doing everything we can to help great people of PR!" Trump tweeted.

Results of recovery efforts will speak much louder than complaints by San Juan Mayor. Doing everything we can to help great people of PR! — Donald J. Trump (@realDonaldTrump) September 30, 2017

The president launched his attacks of Cruz early Saturday, accusing her of having poor leadership, and working with Democrats.

The Mayor of San Juan, who was very complimentary only a few days ago, has now been told by the Democrats that you must be nasty to Trump. — Donald J. Trump (@realDonaldTrump) September 30, 2017

...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

The Trump administration has faced criticism over the past week for the slow movement of aid to the U.S. territory, which was left without power by the hurricane.

Cruz begged for help on Friday, and criticized the federal government's response to the crisis.

"I will do what I never thought I was going to do. I am begging, begging anyone who can hear us to save us from dying. If anybody out there is listening to us, we are dying, and you are killing us with the inefficiency," she said.