The Associated Press reports the regime lost contact with the helicoptors several hours ago - no confirmation of any injuries or fatalities yet.
Regime has released footage of rescue trucks headed to the alleged crash site - but says fog and heavy rain have impeded access. Until we have independent reporting or leaks, we're pretty reliant on Tehran's account, so lets take everything with a pinch of salt.
Does feel a bit like one of those moments the Soviet Union would switch all channels over to Swan Lake...