Police are appealing for help to find a man they want to speak to in relation to a shooting in Perth's southern suburbs, saying he is "unpredictable" and should not be approached.

Key points: At least one gunshot was fired from a stolen car as police followed it

At least one gunshot was fired from a stolen car as police followed it Police say members of the public should not approach Wendell Garlett

Police say members of the public should not approach Wendell Garlett A second man who was also subject to a police appeal has been found

A stolen car was involved in a shooting and police pursuit in Gosnells on Monday before it was later found dumped on a vacant block.

Police began following the Silver Holden Cruze sedan on Dorothy Street about 9:30am on Monday after it was stolen from a house in Maddington last Friday.

They said the car was involved in a fuel drive-off at a petrol station on Albany Highway in Maddington about 7:20am on Monday, and offenders had also tried to use credit cards from the vehicle at two petrol stations in Armadale.

The stolen car was eventually found dumped on a vacant block in Gosnells. ( ABC News )

At least one shot was fired from the window of the car as police followed it, and the vehicle was later found abandoned on nearby Dwyer Crescent as the gunman remained on the run.

No-one was hurt in the incident.

Detectives have appealed for help to find Wendell Garlett, 30, saying he may be able to "assist with their investigation".

A second man who was also the subject of a police appeal yesterday was found in Armadale and was assisting officers with their inquiries, police said.

Forensic officers combed the scene of the shooting as an investigation was launched. ( ABC News: Jon Sambell )

Mr Garlett has been described as approximately 174 centimetres tall with black hair.

"Members of the public are advised not to approach Mr Garlett as he is unpredictable and may have access to weapons," a WA Police spokeswoman said.

"Anyone who sees him is asked to call police immediately on 131 444."

Police yesterday said a 17-year-old man and a 42-year-old woman were also assisting detectives with their investigation.

Police said Tactical Response Group officers and Cannington detectives carried out a search warrant at an address in Armadale on Tuesday in relation to the incident.