Man arrested over Swanbourne murder

Police have had a breakthrough in the investigation into the murder of David Liam Johnson after taking one man in for questioning and seizing a vehicle.

Shortly after the arrest forensic officers and major crime detectives raided a nearby home.

The dark coloured station wagon was taken for further forensic testing, and several items were removed from the home.

Police confirmed a man was assisting with their inquiries into the murder of Mr Johnson, who was 32-years-old.

Mr Johnson was found in Swanbourne's Lime Kiln Field, near a North Street home, about 11.30pm on March 8. The park is close to Swanbourne beach.

On Saturday, detectives revealed Mr Johnson appeared to have been struck by a car before he was shot.

They released a description of a dark coloured station wagon on Sunday, and on Monday they said security cameras in the Swanbourne area appeared to show a Mitsubishi Magna station wagon.

Mr Johnson most recently lived in Fremantle and was described by his family as a caring and kind-hearted larrikin.