A man has been charged with murder, accused of sourcing a tracking device and phones used to co-ordinate the shooting of convicted drug lord Alen Moradian.
The 48-year-old was shot dead in an underground carpark near the busy Bondi Junction shopping precinct in Sydney's eastern suburbs in June.
Police arrested a 22-year-old man at a property in Canley Vale, in the city's west on Monday morning, before charging him with murder.
He was also charged with failing to comply with a digital evidence access order.
The man allegedly sourced a tracking device and phones used to co-ordinate the fatal shooting.
Several people have been charged over various alleged roles in the killing, including the plot's accused mastermind, who cannot be named for legal reasons.
But police are yet to charge anyone with pulling the trigger during the brazen daylight attack, which was followed by a series of tit-for-tat shootings across Sydney.
Investigators on Monday released CCTV footage of the incident showing two men pulling into the Bondi carpark in a Porsche SUV.
One of the men can be seen leaving the vehicle wearing a hood and holding a gun.
The man disappears from screen for several seconds before quickly returning to the Porsche, which then speeds away.
Later footage captured the duo swapping the Porsche for a red Holden Cruze that was parked on nearby James Street in Bondi.
The burnt-out Porsche was subsequently found by police, while the Holden was located burned in the inner-city suburb of Zetland.
Detectives are appealing for anyone with information about the incident or the identities of the men to contact police.
The 22-year-old was refused bail and will appear before Fairfield Local Court on Monday.
Moradian, nicknamed "Fathead", was arrested in 2007 along with his wife Natasha Youkhana and others over what police called one of the largest cocaine and money-laundering rackets in NSW history.
He was sentenced to 16 years and nine months in jail for drug importation and supply.