NSW Police have descended on a crime scene in the urgent search for kidnapped Sydney grandfather Chris Baghsarian, 85.

Officers raided a property in Dural, a semi-rural area in Sydney’s north-west, on Thursday night.

Police believe the kidnappers used the location as a “makeshift stronghold”.

“About 7pm yesterday (Thursday), strike force detectives executed a search warrant at the property on Wildthorn Avenue,” police said on Friday.

“As police continue their intensive investigation to locate Mr Baghsarian and to identify and arrest those responsible for his kidnapping, they are appealing for further public assistance.

“Anyone who may have seen or heard anything relating to the kidnapping or witnessed any sort of suspicious activity in the Dural area since last Friday is urged to contact detectives.”

Baghsarian has been held captive since three men bundled him into a dark-coloured SUV outside his Sydney home just before dawn last Friday.

While police are confident the grandfather and widower is still alive, videos of him restrained in an unknown location have prompted grave concerns for his safety.

His desperately worried family spoke about their harrowing ordeal for the first time on Tuesday.

“Our family is living through a nightmare we never thought possible,” they said in a brief statement released via police.

“Chris’s kidnapping feels surreal, and we are struggling to make sense of the fact that he has been taken and that our family has been caught up in something that has nothing to do with us.”

They described him as a deeply loved and gentle family member “who would never hurt a fly” and asked for privacy as they navigated “an extraordinarily distressing time”.

Vision published by the Nine Network shows a dark Toyota pulling into a street in North Ryde before Baghsarian is abducted from his home.

A man in hi-vis clothing is seen emerging from the car, followed by an accomplice.

Moments later, they are seen pushing the elderly man across the landing as the car moves closer.

Police said a burnt-out vehicle matching the description of the SUV involved was found nearby.

Baghsarian’s lack of family or personal links to any criminal or underworld activity is making the case difficult for investigators.

No ransom has been demanded, leaving police to appeal directly to the kidnappers to return the grandfather to a safe location.

NSW Premier Chris Minns echoed calls for the perpetrators to release Baghsarian but warned there would be serious consequences for the abductors once caught.

“It’s not too late to end this situation … please return him to his family,” he said on Monday.

“Drop Mr Baghsarian off at a shopping centre, an emergency department or even a nursing home.”

Police would not confirm if the intended target of the kidnapping had links to organised crime.

-with AAP