Detectives investigating the murder of Johnstone man Steven Quail have appealed for help to track down two people who were spotted at the scene around the time he was killed.

Mr Quail's body was found at his home in Greenend Avenue at around 10.45am on Saturday, February 25.

Police said the 42-year-old victim suffered a violent death.

Officers are keen to trace two men who were seen in the area at the time of a reported disturbance at the house shortly before 1am that morning.

The first man was seen walking along Greenend Avenue, towards Craigview Avenue, and is described as white and wearing dark clothing.

The second man was seen later and was also on foot. He was travelling in the opposite direction and is described as white, wearing dark clothing and in possession of a bag.

Detectives also want to trace three dark-coloured hatchback vehicles, one of which may be a taxi, and a small, light-coloured five-door hatchback that were spotted near the scene.

In addition, they would like to hear from anyone who was in and around the Howwood Road housing scheme that night who may have seen someone acting suspiciously.

Any motorists who have dashcams fitted in their vehicles and were in the area at the time are also asked to contact police.

Detective Chief Inspector Raymond Brown, from the Major Investigation Team, said: "We are keen to speak to these individuals as it is possible that they have may have seen the killer or killers or heard the disturbance at the house.

"We believe the person or persons responsible has called at Steven’s house around this time and may have been seen arriving or leaving.

“These people may hold vital information which they may consider as minimal or potentially insignificant but could prove vital in identifying the person or persons responsible for the murder.”

As part of their investigation, detectives have been carrying out extensive forensic examinations and door-to-door enquiries, as well as reviewing CCTV footage.

Anyone with information is asked to call the police on 101. Alternatively, ring Crimestoppers on 0800 555 111, where anonymity can be maintained.