A fourth man has been charged over the alleged kidnapping and murder of Sydney grandfather Chris Baghsarian.
Moustafa Ohrok, 19, was arrested at Mt Druitt Police Station on Tuesday morning and charged with murder, and take and detain in company with intent to ransom occasion actual bodily harm.
He was refused bail and will appear in Mt Druitt Local Court on Wednesday.
Ohrok is the fourth person to be charged with the 85-year-old's alleged murder and kidnap after the grandfather was taken from his North Ryde home in the early hours of February 13.
Police said early inquiries established Mr Baghsarian was not the intended target of the kidnapping and had been taken in a case of mistaken identity.
His remains were located 11 days later near a golf club in Pitt Town.
The following day, police arrested and charged Gerard Andrews, 29, and Daniel Stevens, 24, over the alleged kidnapping and murder.
Court documents detail allegations that Andrews and Stevens transported Mr Baghsarian to a semi-rural makeshift stronghold in Dural, on the city's outskirts.
A fourth man has been charged in relation to the kidnapping and murder of 85-year-old Sydney grandfather Chris Baghsarian (pictured)
It comes nearly one month after heavily-armed police arrested a third man (pictured) over the innocent grandfather's murder
That man was revealed to be Deklin Donnelly, who police allege is a 'major player' in Mr Baghsarian's alleged kidnap and murder
CCTV footage has since emerged of three men walking towards the alleged kidnappers' Wildthorn Avenue base in Dural on the night of the kidnapping.
The arrest comes one month after Deklin James Donnelly, 23, was charged with the alleged kidnapping and murder of Mr Baghsarian.
Donnelly was charged with 10 offences including murder and special aggravated kidnapping.
He was also charged with a range of unauthorised firearm possession and drug supply and possession charges. Police allege they seized firearms, ammunition, prohibited weapons and prohibited drugs during the raid, as well as mobile phones and electronic devices.
'We will allege that he facilitated and recruited others to help in the kidnapping and detention of Mr Baghsarian,' Detective Acting Superintendent Andrew Marks said.
'We will also allege that he arranged people to dispose of Mr Baghsarian's body.'
Detective Acting Superintendent Marks suspected the target was to be kidnapped in the hope of receiving a ransom reportedly worth $50million.
The grandfather's remains were located 11 days after his kidnap near a golf club in Pitt Town
Daniel Stevens, 24, has also been charged with Mr Baghsarian's kidnap and murder
Gerard Andrews, 29, was also charged - his defence lawyer has previously told the media his client was not the mastermind of the incident
Mr Baghsarian's family, who described the harrowing ordeal of the kidnapping as a nightmare, expressed relief that the alleged offenders had been caught.
They have asked for privacy as they come to grips with the death of their devoted father, brother, uncle and grandfather 'who would never hurt a fly'.
Anyone with information about the identity of the men in the CCTV or the driver of the blue car is urged to contact Crime Stoppers on 1800 333 000.