Received

A broader lockdown looms for Sydney, with another 12 COVID-19 cases recorded in NSW and exposure venues spreading past hotspot areas.

Premier Gladys Berejiklian says a crisis cabinet meeting will be held on Saturday, and she has foreshadowed an expansion of the seven-day lockdown, which began overnight.

Infections are growing at a similar rate to Friday, she says, but exposure sites have begun emerging in areas outside of those locked-down.

They include communities within the northern beaches and western Sydney, where people have potentially been infectious for days.

Some 29 cases were recorded in the 24 hours to 8pm on Friday, 17 of which had already been announced, taking the cluster to 80 cases.

More than half were not in isolation from the beginning of their infection period.

"What we're finding is by the time we've got to some of those cases, they've already on-transmitted," Chief Health Officer Kerry Chant said.

"That means there have been a number of people that have been infectious in the community unknowingly for a period of time."

A new potential 'super spreader' venue has also been identified, with two cases linked to Great Ocean Foods at Marrickville.

Anyone who worked in, attended or was a customer at the seafood supplier's Marrickville store from June 21 to June 25 is a close contact and must immediately get tested and isolate for 14 days, regardless of the result.

To "get ahead of the rings" of transmission, NSW Health has also taken the unusual step of declaring their household members close contacts too.

"Previously one or two people in the household may have had it. Now we're seeing everybody get it," the premier said.

Anyone who directly received a delivery from Great Ocean Foods over the same period - and their household contacts - must immediately get tested and isolate until contacted by NSW Health.

Other venues of concern include Sydney's Cheers Bar & Grill on June 20 between 1.45am and 3.30am, and Rebel at Bankstown shopping centre on June 24 between 3.45pm and 4.30pm.

Anyone who attended the venues at those times is a close contact and must get tested and isolate for 14 days.

Dr Chant appealed for Sydneysiders to use common sense and check the list of exposure sites every time they leave the house.

"Yes there are the orders but ... can I just urge everyone to err on the side of caution," she said.

"If you're in doubt about whether you are in a public health order or you have restricted movements ... just assume you are impacted."

Health Minister Brad Hazzard also pleaded for patience and co-operation as authorities determine how best to reign in the outbreak.

"The Delta variant is proving to be a very formidable foe," he said.

"No matter what defensive steps we're taking at the moment, the virus seems to understand how to counter attack."

Millions of people in Sydney are already in lockdown, with those living or working in the Woollahra, Waverley, Randwick and City of Sydney council areas unable to leave home for a week except for essential purposes.

The order took effect from 11.59pm on Friday and lasts until 11.59pm on Friday, July 2.

On Saturday that was expanded to include people who study in those areas.

The Australian Medical Association has been agitating for a broader lockdown of the entire Sydney basin, saying on Friday the current restrictions will not be enough to get on top of the outbreak.

Restrictions remain for other areas of Greater Sydney as well as the Central Coast, Blue Mountains, Wollongong and Shellharbour, while those who live or work in the Inner West, Canada Bay or Bayside council areas are still barred from leaving metropolitan Sydney.

© AAP 2021

A police officer has been hit and killed while laying road spikes to stop a stolen car north of Brisbane, with a manhunt underway for the driver who fled the scene.

Senior Constable Dave Masters was responding to a suspected stolen vehicle when he was struck on the Bruce Highway at Burpengary just after 3am on Saturday, police say.

The incident comes as the Queensland Police Service faces workplace health and safety charges, after 26 officers were injured using tyre-deflating spikes while on the job.

Commissioner Katarina Carroll was emotional as she paid tribute to the 53-year-old.

"Police officers are very close - it's one big family - and today is a very tough day," she said.

"Dave is a highly regarded police officer (with) ten years in the organisation ... hardworking, capable, a beacon at the station, much loved by everyone."

Queensland Police Union secretary Mick Barnes said the incident again highlights the inherent danger involved in all police work.

"Dave's life has been cut tragically short for one reason and one reason alone - for simply doing his job," he said.

"We know that when we leave home to go to work each day, there are never any guarantees we will come home at the end of the day.

"(But) Dave - as a parent, husband, and committed officer - leaves behind a station in shock and disbelief."

Investigations by the Forensic Crash Unit and Ethical Standards Command have begun, as police search for the driver of the white Hyundai Kona SUV, who fled the scene.

The investigation will also probe the use of road spikes in the incident.

Homicide squad Superintendent Craig Murrow said the vehicle - a hire car from Ipswich that wasn't returned - has not been spotted since, and called for motorists who have dash cam footage of the incident to come forward.

Massive delays are expected along the Bruce Highway for hours, with northbound lanes at Burpengary closed on the first day of school holidays.

© AAP 2021

A police officer has been hit and killed while laying road spikes to stop a stolen car north of Brisbane, with a manhunt underway for the driver who fled the scene.

Senior Constable Dave Masters was responding to a suspected stolen vehicle when he was struck on the Bruce Highway at Burpengary just after 3am on Saturday, police say.

The incident comes as the Queensland Police Service faces workplace health and safety charges, after 26 officers were injured using tyre-deflating spikes.

Commissioner Katarina Carroll was emotional as she paid tribute to the 53-year-old.

"Police officers are very close - it's one big family - and today is a very tough day," she said.

"Dave is a highly regarded police officer (with) ten years in the organisation ... hardworking, capable, a beacon at the station, much loved by everyone."

Queensland Police Union secretary Mick Barnes said the incident again highlights the inherent danger involved in all police work.

"Dave's life has been cut tragically short for one reason and one reason alone - for simply doing his job," he said.

"We know that when we leave home to go to work each day, there are never any guarantees we will come home at the end of the day.

"Dave - as a parent, husband, and committed officer - leaves behind a station in shock and disbelief."

Investigations by the Forensic Crash Unit and Ethical Standards Command have begun, as police search for the driver of the white Hyundai Kona SUV, who fled the scene.

The investigation will also probe the use of road spikes in the incident.

Queensland Police has been charged with breaching workplace health and safety laws over a lack of training for officers using the spikes.

Some 26 officers have been injured while using the devices between 2012 and 2019, including Constable Peter McAulay who was severely injured in 2018.

But Ms Carroll defended the use of road spikes, saying there would always be a place for them in police work.

"Road spikes are used across the world and across Australia," she said.

"They are actually very, very effective.

"Since the incident with Pete McAulay, there has been extensive training, and a lot less incidents.

"When anything like this happens it will be reviewed again ... (but) first and foremost, this actually is a homicide investigation."

Homicide squad Superintendent Craig Murrow said the vehicle - a hire car from Ipswich that wasn't returned - has not been spotted since, and called for motorists who have dash cam footage of the incident to come forward.

© AAP 2021