Covid Australia live news update: vaccines for 16-39s from 30 August; NSW 681 cases, Vic 57 and ACT 16; NSW extends regional lockdown

NSW records 681 local cases and one death, extends regional lockdown as police issue 671 penalties in 24 hours; ACT records 16 cases; Victoria records 57 cases; Queensland reports another Covid-free day; Melbourne has now had 200 days of lockdown. Follow all the day's news

• NSW update: premier signals exciting things to look forward to' after record 681 new cases
• Victoria update: Daniel Andrews insists lockdown is working despite daily cases rising to 57
• Experts say Delta variant spread among Australian children is concerning in absence of vaccine
• Restrictions: NSW; Vic; Qld; borders
• Hotspots: NSW; Vic; Qld
• Vaccine rollout tracker; get our free news app; get our morning email briefing

9.14am BST

Four teenagers have now been charged over a home invasion that saw Wallabies great Toutai Kefu hospitalised with critical wounds to his abdomen, AAP reports.

The 47-year-old, his wife and two of his adult children were admitted to hospital after Kefu disturbed the alleged burglary in their suburban Brisbane home on Monday.

The four alleged offenders, aged between 13 and 15, have been charged with a combined total of 44 offences including attempted murder and grievous bodily harm.

One was arrested at the scene on Monday and two others were charged in the days following the incident.

Further charges were laid on Thursday against a 15-year-old boy who was admitted to hospital after the alleged burglary and later discharged.

All four were denied police bail and were due to appear before the Brisbane Children's Court. Kefu has been released from hospital.

9.00am BST

As Western Australia moves to classify NSW as an extreme risk" in its controlled border regime in the coming days, hundreds of people have returned to WA from NSW before restrictions are tightened, AAP reports.

Arrivals from NSW are already required to prove they have had at least one vaccine dose under the rejigged high risk" category.