A shooting at a Melbourne bottle shop has left one man dead, another two in police custody and a police officer traumatised.
The store owner said he was a "a lucky man" after police shot dead a robber who was threatening him with a sawn-off shotgun at Park Orchards in Melbourne's east on Sunday night.
It's believed the 48-year-old robber was pointing a weapon at shop owner Xueqiang Wang, prompting a male senior constable from a specialist unit to open fire.
The man died at the scene while two others, aged 49 and 50, were later arrested and remain in police custody.
"I thank Victoria Police ... I thank the policeman," Mr Wang told the Herald Sun.
The police officer was traumatised over the shooting and was being offered support.
"Any member that's been involved in a situation like this goes through a lot of trauma," Assistant Commissioner Steve Fontana told reporters on Monday.
"It was a confrontation and I suppose if the member's actually resorted to using a weapon and it's ended up in a fatality, that has an impact on anyone involved.
"There's a lot of support being put around to make sure that his welfare is being looked after."
Premier Daniel Andrews said he had been briefed on the "nasty incident" and was supportive of police.
"I know that their judgment in a split second is as good, perhaps better than, any police force in the world," he said.
"They're well trained, they're well equipped, they use lethal force only when they have to."
The shooting was referred the coroner.