A helicopter has disappeared and is feared to have crashed at Mount Disappointment, north of Melbourne.
The helicopter was travelling in a convoy with another helicopter over the area, which is 60km north of the Victorian capital, when it disappeared just after 9.30am on Thursday.
Police in Victoria and other emergency crews are searching the region for the missing helicopter.
“At this stage the second helicopter [from the convoy] is yet to be located,” a police spokeswoman said. “Emergency services are in the area searching.”
A Bombardier Challenger jet aircraft, operated by Cobham SAR services on behalf of the the Australian Maritime Safety Authority, is scouring the region, along with an air ambulance helicopter and another helicopter.

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Mount Disappointment is on the the southern end of the Great Dividing Range. The 800m peak was named by explorers Hamilton Hume and William Hovell in 1824, who were disappointed that the dense tree growth prevented them from being able to see Port Phillip Bay from the summit.
In 1944, two Royal Australian Air Force dive bombers crashed into the side of the mountain which was obscured by a low-hanging cloud, killing five people. Two more RAAF members died in a crash on the mountain in 1942, and another in 1953.
The Australian Transport Safety Bureau said it had been notified of the incident and is gathering further information.
More to come