Iran and the United States held their fire for a third consecutive day on Monday, though American ally Saudi Arabia said it had intercepted a drone attack launched by Tehran-backed groups in Iraq.
Fighting between the longtime foes has paused since early Saturday after 13 nights of renewed US strikes on the Islamic republic sparked by a breakdown in diplomacy over Iran's blockade of the Strait of Hormuz.
President Donald Trump's UN envoy had suggested the pause was to give negotiations a chance, but Tehran said there were no direct talks with the US to end the conflict, which began in late February with a wave of US-Israeli strikes and has rocked both the region and the global economy.
"Mediators may convey messages from the American side to us regarding current developments in the region. But at present, we are not engaged in any negotiations with the United States," said Iranian foreign ministry spokesman Esmaeil Baqaei.
Trump told US media outlet Axios that mediating countries had asked him to hold fire, adding: "We are in very deep talks with Iran".
