diplomatic

"I have no doubt that his passing is not only a national loss but is also felt within the international diplomatic community," he added.

It is a rare instance of cooperation between Iran and the US, who do not have formal diplomatic ties.

European and Arab countries, led by France and Saudi Arabia, had spent the summer trying to resurrect the diplomatic track, appalled by Israel's conduct on the ground.

The UN experts said the international community could not "remain silent in the face of such systemic violations" and that states "must take concrete diplomatic action to pressure Iran to halt this execution spree".

In the meantime, they said they would "continue to pursue diplomatic routes and negotiations".