US President Donald Trump on Wednesday revealed that top Iranian officials had called him directly to request a halt to U.S. bombing attacks.

Axar.az reports, citing Fox News, the exchange, which marks a rare and critical moment of direct engagement between Trump and Tehran leadership, came as the president said Washington had delivered “vicious” and “violent” strikes earlier in the day.

The president also told Fox News the U.S. operation involved the deployment of 49 Tomahawk missiles alongside fighter jets targeting radar and air defense systems. The strikes were reportedly hammered positions about 40 miles outside Tehran and along Iran’s southwestern coast on the Persian Gulf.

Trump warned that the United States is prepared to rapidly escalate military action if Tehran does not soon sign an agreement to end the ongoing crisis.

“We'll bomb the S— out of them tomorrow night,” Trump warned.