A man has been arrested during a major police operation south-west of Melbourne, with specialist police and armoured cars converging on the property.
The incident began around 12:00pm at the property on Breguet Road in Lara, when police attempted to arrest a 39-year-old man.
As he tried to leave the property, his car rammed an unmarked police vehicle, leaving an officer with a serious hand injury.
The officer was still at the hospital in the late afternoon, police said.
"The man was arrested a short time later after he crashed his car and tried to run off," a Victoria Police spokesman said in a statement.
"Police located a firearm in the vehicle."
The man was taken to hospital with what police called "minor injuries".
Police said he would be interviewed at a later time.
Officers assisted by specialist police also executed a search warrant at the premises.
The police spokesman said it was an "isolated incident" with no immediate concerns to the public.
More than a dozen police vehicles, including armoured cars, were at the property in what appeared to be a major police operation.
Officers cut through two chains securing gates at the property before then driving one of the armoured cars close to the house and other farm buildings.
Armed officers were stationed around the perimeter of the property.
The spokesman said the investigation was ongoing.
