Australia news live update: new Covid rules in NSW as medical chief says ‘missing link’ in cases still unknown

Mask-wearing mandatory for all indoor public venues, including public transport, as authorities brace for more infections; five blood-clot cases likely' linked to AstraZeneca in past week. Follow the latest updates

• Full report: authorities search for missing link' between traveller from US and positive Sydney man
• Sydney restrictions: new rules for Mother's Day weekend explained
• Sydney Covid hotspots: list of coronavirus exposure sites
• Sydney Roosters caught up in Covid scare

9.12am BST

Union lawyers have accused the Labor Party's national executive of preselection stacking" in plans to choose candidates for safe Victorian seats in the next federal election by Friday, reports AAP.

Nominations for candidate preselection in 21 safe federal seats in Victoria and one new seat opened on Tuesday and are due to close on Friday morning, in what some party members claim is an unprecedented rushed process.

8.38am BST

Shooting stars will light up the early morning sky across Australia this weekend.

Those willing to brave the cold over the next few days will be rewarded with a spectacular show of streaking lights.

Related: Eta Aquarids meteor shower 2021: Australia expecting to see spectacular display of shooting stars