MACKAY man Richard Dobrowolski was investigating a noise in his back yard when he was shot in the lower back and killed in 1997.
The perpetrator of the cold-blooded crime remains a mystery today and - 15 years later - police are still calling on people to contact them if they have fresh information about the murder.
Saturday, March 31 marked the fifteenth anniversary of Mr Dobrowolski's murder.
The 49-year-old was living with his girlfriend at 39 Ungerer St, North Mackay when he was shot dead.
On a Monday evening in 1997 he had walked outside after he had heard noises in his back yard around his boat.
Police responded to a triple zero call a short time later where they found him dead at the top of the stairs of his high-set home.
Police investigating the crime had few leads but it was believed a white sedan was seen speeding away from the scene.
His girlfriend also reported that she had seen a man lurking in their yard earlier that night.
Detectives have thoroughly investigated Mr Dobrowolski's background but have found no known enemies.
He was a former speedway motorcycling champion in South Australia who had moved to Mackay after he had separated from his wife in 1996.
After moving to Mackay he met his girlfriend and they were living together in a rented North Mackay house.
He worked for Telstra and was a regular churchgoer.
Despite a $250,000 reward for information police were unable to gain enough information to solve the crime.
Neither the vehicle nor the murder weapon has been found. If anyone has new information about the crime they are encouraged to call Crime Stoppers.