Armed Crime Squad detectives and the Special Operations Group raided the house at 9.20pm on Sunday.

There, they arrested a 22-year-old Brown Hill man, who is currently under police guard in hospital receiving treatment for an unrelated incident.

He is expected to be charged with intentionally causing serious injury and will likely face a bedside court hearing on Monday.

He is also expected to be to be charged by Ballarat CIU in relation to a car theft in Alfredton and vehicle fire in Nerrina on Sunday.

Detectives from the Armed Crime Squad had remained tight-lipped since the scenes unfolded last week, where a 17-year-old male walked into the APCO Service Station with a gunshot wound on Main Road about 4.15am on Thursday.

Related coverage: Man with gunshot wound attends service station, car crashes into pond

Meanwhile, a second man who was at the Wendouree house during the police raid on Sunday night was also arrested.

Police say they found a "significant quantity of drugs and cash" at the house.

A 30-year-old Wendouree man was arrested and is expected to be charged with trafficking a commercial quantity of methylamphetamine.

He will appear at Ballarat Magistrates' Court on Monday.

Anyone with information is urged to contact Crime Stoppers on 1800 333 000 or submit a confidential crime report at www.crimestoppersvic.com.au

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