Drone footage captured suspected underworld hit in Sydney, police say

Drone footage that reportedly captured a suspected underworld hit in Sydney is under investigation and "concerning", a senior NSW Police officer says.

Jack Cheung, 35, was shot dead in what police called a "very brazen attack" on busy North Rocks Road in Carlingford, in Sydney's north-west, shortly before 7am on Wednesday.

Homicide squad investigators have taken over the case, with police saying it was a targeted attack.

Raptor Squad officers, who are focused on groups and individual members engaging in serious and organised crime, were seen at the crime scene.

Aerial footage, purportedly shot from a drone and showing a white car with its door open and a person leaving a driveway and slowly walking towards the road, has been circulating since the attack.

The have also been reports the car had been fit with a GPS tracker.

Assistant Commissioner Scott Cook said police were aware of the footage, adding it was "not unusual".

He said the "compartmentalisation of contracted people in organised crime" was a known feature of Sydney's current underworld milieu.

Assistant Commissioner Cook last month told the ABC that contract were put out for bidding in an open marketplace by a so-called "violence broker", operating on the orders of an offshore entity to whom they have no allegiance.

"Drone operators are one of those contract criminals," he said on Thursday.

"It's not acceptable for people to say 'I just drove the drone' or 'I just put the tracker on the vehicle' or 'I just did the stealing of the car', all those people are facilitating organised crime.

"All of those people are as complicit as anyone else in the homicides and the violence.

"We're aware of it. It's a new era in the war against crime."

The 'globalisation of organised crime'

Assistant Commissioner Cook said officers were "methodically working through the evidence that's available".

"I think it's highly likely there are overseas actors involved at some level," he said.

"People in all parts of the world are contributing to the violence that's in New South Wales.

"Overseas drug traffickers and overseas money launderers and overseas gangsters have direct contact with criminals here that are perpetrating the violence that we see on our streets."

He said modern technology was allowing for the "globalisation of organised crime".

"I don't think we can keep our heads in the sand that local crime is just local crime any longer, it's global."

However, he said police were getting better at identifying and acting against those involved, noting hundreds of people had been arrested over the spate of attacks in Sydney over the past 18 months.