Police are hunting a gunman who killed a man and wounded two others in the northern Perth suburb of Banksia Grove, with all three victims said to have links to an outlaw motorcycle gang.

Key points: Three men shot in Perth's north, 23-year-old man from Wanneroo died

Three men shot in Perth's north, 23-year-old man from Wanneroo died 53-year-old man and 24-year-old son in stable condition

53-year-old man and 24-year-old son in stable condition Police continue to hunt shooter

Police were called to a home in Cassia Link late last night after reports of gunfire, and found a 23-year-old man from Wanneroo in a critical condition with a gunshot wound.

He later died in hospital.

Another two men related to the deceased, a 53-year-old man from Landsdale and his 24-year-old son from Wanneroo, were found at the home with gunshot wounds.

They are both in a stable condition after undergoing surgery in Royal Perth Hospital.

Police said seven people were at a home in Cassia Link when the shooting took place, however they are yet to establish a motive.

They confirmed the victims were connected to an outlaw bikie gang, but said they were yet to establish the identity of the gunman.

A neighbour, who did not wish to be named, told the ABC he was inside his home last night when "all hell broke out" on the street.

He said he heard six shots around 10:30pm.

"There was a lot of shouting and people running up and down the street, that was about it," he said.

Forensic police at the scene of a triple shooting on Cassia Link in Banksia Grove. ( ABC News: Jon Sambell )

He said he saw one of the victims in pain outside his home.

"He was not too good. He was slumped over the letterbox," he said. "I didn't see the other two."

He said there had been a history of trouble in the street, but residents were fearful of speaking out.

"I'm from Glasgow mate, and it's like that every day here. It doesn't bother me at all. It doesn't faze me but it's definitely not good for the kids [in the area]," he said.

Another neighbour, Tim Dunn, also heard the gunshots.

I just thought it was fireworks going off, one of the local kids mucking around. I didn't really think anything of it," he said.

"It's dead quiet normally, you don't hear anything ... it's a good street."

Police review CCTV footage

Police have CCTV footage from a nearby house which may help the inquiry.

Sorry, this video has expired Police are reviewing CCTV footage from a nearby house ( Supplied )

Gunshots can be heard in some of the footage, and a car was captured being driven away from the area just minutes later.

Major Crime Squad head Detective Inspector Mark Fyfe said the victims of the shooting were related.

He said those wounded are a father and a son, and the deceased man was either the father's stepson or cousin.

He appealed for any members of the public with information about the shooting to contact Crime Stoppers.

"It's of great concern to us. A man is now deceased as a result of it," he said.

"It's a shooting in a public street. We are obviously putting everything we can into this like we do with every murder investigation."

The two survivors of the shooting remain under guard in hospital and police hope to interview them later today.

Premier Colin Barnett said the shooting was very disturbing.

"My understanding is this is gang-related, though that would only be confirmed by the police," he said.

"A very disturbing situation, particularly for the people living in that area."