US President Donald Trump reportedly rejected Russian President Vladimir Putin's proposal to move Iran's enriched uranium to Russia during a phone call this week, a US news website reported on Friday.

Trump turned down Putin's proposal for Russia to remove Iran's 60% enriched uranium as part of a deal to end the war in the Middle East, according to Axios, a US news outlet, citing sources.

The rejected proposal was one of several ideas Putin raised to end the war during the call with Trump on Monday, the report said.

"This is not the first time it was offered. It hasn't been accepted. The US position is we need to see the uranium secured," said a US official, Axios cited. 

It's not clear whether Iran would accept the proposal now. In the last round of talks before the war, Iran rejected the transfer idea and proposed diluting the uranium inside its own facilities under the supervision of the International Atomic Energy Agency, according to the report.

Earlier this week, Axios, along with several other outlets, also reported that the Trump administration is considering sending special operations forces into Iran to secure or seize the country's highly enriched uranium.

When asked during a Fox News interview on Friday whether there's an operation in place to recover the enriched uranium from Iran, Trump said, "We're not focused on that. But at some point we might be."

(With input from Xinhua)