Police have released CCTV footage as they hunt for additional suspects over the kidnapping and murder of an elderly Sydney man taken in a case of mistaken identity.

Chris Baghsarian, 85, was abducted from his North Ryde home in the early hours of February 13, triggering a major police response.

Officers were called to the property just after 5am, before detectives from the State Crime Command’s Robbery and Serious Crime Squad launched Strike Force Chabot to locate the missing man.

Early investigations revealed Mr Baghsarian was not the intended target, with police treating the case as a fatal case of mistaken identity.

His remains were discovered 11 days later, about 8am on February 24, near a golf club in Pitt Town in Sydney’s north-west.

Two men, 29-year-old Gerard Andrews and 24-year-old Daniel Stevenswere charged the following day and remain before the courts, but police say the investigation is ongoing.

VIDEO: https://thenightly.com.au/australia/nsw/chris-baghsarian-police-release-cctv-in-hunt-for-suspects-over-sydney-grandfather-abduction-murder-c-21980665

Senior police believe he was killed at a makeshift stronghold in the semi-rural suburb of Dural before his body was dumped hours later.

“It’s somebody’s worst nightmare, right?” Detective Acting Superintendent Andrew Marks said.

“These people need to be held to account for that, and that’s why we are bringing these people before the courts.”

Chris Baghsarian.Chris Baghsarian. Credit: 7NEWS/7NEWS

Detectives have now released CCTV images of three additional men who may be able to assist with inquiries.

The men were captured walking towards a property on Wildthorn Avenue in Dural — believed to be linked to the alleged kidnappers — on the night of the abduction.

Footage from the following day shows a blue Hyundai sedan arriving at and leaving the same location shortly after midday.

Police said the vehicle may be identifiable by a missing hubcap on its left side.

Investigators are urging anyone who recognises the men or the vehicle to come forward as they work to piece together the events surrounding the killing.

Anyone with information is urged to contact Crime Stoppers.

Crime Stoppers: 1800 333 000 or crimestoppersnsw.com.au.