An armed man has been shot dead by police following a stand-off on Melbourne's Monash Freeway.
Police were called to the on-ramp of the freeway at the Eastlink interchange at Dandenong North about 9:30am on Thursday following reports of the armed man.
It is believed responding officers were negotiating with the man when he was shot. He died at the scene.
Mt Eliza man Ben told ABC radio he witnesses a "stand-off" between dozens of police and a man.
"They've shut down the Monash Freeway going inbound and they had guns drawn on the assailant," he said.
"I don't know if it was a pursuit and they've pulled him up over there, or why he was in that position."
Aerial footage from the scene shows a body on the road and multiple police vehicles and paramedics, with a section of the freeway taped off.
A Victoria Police spokeswoman confirmed homicide detectives will investigate.
The investigation will be overseen by Professional Standards Command, as is standard procedure following a police shooting.
There is no ongoing threat to the community.
All city-bound lanes of the Monash Freeway remain closed, with the Department of Transport is urging motorists to exit the freeway as soon as they can.
"The scene is under the control of Victoria Police. The Monash Freeway will open as soon as it is safe to do so," the department said in a statement.
