Iran has sent a revised proposal to Pakistan aimed at ending the ongoing conflict. According to an Iranian diplomat, the proposal was handed over to Pakistan on Thursday, with the country acting as a mediator. The diplomat told Al Jazeera on Friday that the document had been delivered the previous day.

The new proposal had been awaited by U.S. President Donald Trump, who had rejected Iran’s earlier offer last week. Reports indicate that the previous proposal called for a ceasefire first, followed by discussions on Iran’s nuclear program. Trump, however, preferred to finalize a nuclear agreement while hostilities continued. Details of the revised proposal have not yet been disclosed.

The conflict began after a joint U.S.-Israeli attack on Iran on February 28, which triggered 40 days of fighting. A ceasefire brokered by Pakistan on April 8 between Iran and the United States remains in effect.