A senior White House official said it's unknown whether President Trump will meet with San Juan Mayor Carmen Yulin Cruz when he visits Puerto Rico on Tuesday, and suggested the mayor has been "too busy" talking with the media to participate in federal response efforts to Hurricane Maria.

"She has been invited to FEMA command center several times to see operations and be part of efforts but so far as refused to come, maybe too busy doing TV?" the White House official told ABC News.

When asked whether the president will meet with Cruz next week, the official said, "Not sure."

The president attacked Cruz on Twitter on Saturday morning and accused her of demonstrating poor leadership as Puerto Rico works to recover from Hurricane Maria, which made landfall there as a Category 4 storm last week.

"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," the president tweeted.

"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," he said in subsequent tweets. "They 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."

Hurricane Maria knocked out power for all of Puerto Rico when it hit last week, and half of the island's population is without drinking water. Food and fuel are increasingly scarce, and officials expect Puerto Rico to remain without electricity for several months.