President Obama's joint press conference with Brazilian President Dilma Rousseff scheduled for Saturday has been canceled, according to multiple media reports.

Obama departed for a weekend visit to Brazil Friday evening when White House officials received word that Rousseff did not want to take questions, according to the New York Times and Fox News

There had been speculation that Rousseff, who is new to the job, did not want to answer questions about Brazil's desire to get a permanent seat on the U.N. Security Council.

Brazil was one of five Security Council members that on Thursday night abstained on a resolution permitting nations to enforce a no-fly zone over Libya. The United States, which is a permanent member, was one of 10 nations to vote for it.

A press representative for Brazil's foreign ministry told a pool reporter that Rousseff's decision not to take questions was because of issues regarding the United Nations.

"It's not her way," said the press officer, who asked not to be identified. "She didn't do it with the prime minister of East Timor either," referencing a recent bilateral visit, according to the pool report.

The leaders would appear to deliver statements, but not take questions.

The announcement also comes one day after Obama issued an ultimatum to Libyan leader Moammar Gadhafi and threatened the use of military force if he does not halt violence against civilians.  The cancellation means that President Obama will not take questions Saturday about Libya or the crisis in Japan.