Iran has accelerated its production of near weapons-grade uranium as tensions between Tehran and Washington rise after the election of U.S. President Donald Trump, a report by the United Nations’ nuclear watchdog seen by The Associated Press on Wednesday showed.

The report from the International Atomic Energy Agency comes amid growing concerns that Iran may pursue a nuclear weapon.

Iran's stock of uranium close to weapons grade has jumped since December, two reports by the U.N. nuclear watchdog said on Wednesday.