Two men have been charged by Homicide Squad detectives investigating the shooting murder of a senior member of an outlaw motorcycle gang (OMCG) in the state's central west earlier this year.
Bandidos OMCG Central West Chapter president Shane De Britt was found with a fatal gunshot wound to the head in January near Wellington.
On Friday the strike force investigating the death made a breakthrough, swooping on a rural property and putting two men before the courts.
About 10.50am on January 14, police and emergency services responded to reports a man had been shot at a property on Catombal Road, Eurimbla, about 50km south of Wellington.
Officers attached to Orana Mid-Western Police District attended and located the body of a 60-year-old man inside the home.
He had suffered a gunshot wound to the head.
The man has been formally identified as Bandidos OMCG Central West Chapter President, Shane De Britt.
A crime scene was established at the property and examined by specialist forensic officers.
The State Crime Command's Homicide Squad, assisted by Criminal Groups Squad and Orana Mid-Western Police District detectives, started an investigation into the circumstances surrounding the man's death under Strike Force Kerrison.
Following extensive investigations, detectives, with assistance from the Tactical Operations Unit (TOU), arrested two men - aged 58 and 39 - at a rural property near Stuart Town, about 34km south of Wellington, from 6am on Friday.
A short time later, officers executed a search warrant at the property, where investigators seized evidence relevant to the homicide investigation.
Officers were assisted throughout the operation by Orana Mid-Western Police District, the Criminal Groups Squad, police divers from the Marine Area Command, PolAir, the Public Order and Riot Squad (PORS), and the Dog Unit.
The men were taken to Dubbo Police Station, where the older man was charged with murder, unauthorised possession of firearms in aggravated circumstances, and participate criminal group contribute criminal activity.
The younger man was charged with accessory after the fact to murder, unauthorised possession of firearms in aggravated circumstances and participate criminal group contribute criminal activity.
Both men were refused bail to appear via video link before Parramatta Local Court on Saturday.
Investigations by Strike Force Kerrison detectives are continuing.
Anyone with information that may assist Strike Force Kerrison investigators is urged to contact Crime Stoppers: 1800 333 000 or https://nsw.crimestoppers.com.au. Information is treated in strict confidence. The public is reminded not to report crime via NSW Police social media pages.
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