NSW’s two-week streak of no new locally-acquired COVID-19 cases could be over after a school in Sydney’s eastern suburbs was closed because of a probable coronavirus case.

Rose Bay Public School will be closed on Friday, with students to learn from home, as NSW Health investigated a probable case of COVID-19, the school said in a statement on its website.

NSW has not confirmed a community-derived COVID-19 case in two weeks. The suspected case was one of three reported in NSW on Friday – the other two were in returned overseas travellers.

The total number of cases recorded in NSW sits at 3115.

• Read the school’s full statement here

Victoria confirmed four COVID-19 cases on Friday, none of them linked to the Black Lives Matter protest or the protester who is a confirmed case.

Queensland had one case – a two-year-old boy who has recently returned from overseas.

Friday’s school closure in Sydney came as NSW Police said they would not hesitate to prosecute those who attended protests planned for Friday night and Saturday afternoon amid virus health and safety concerns.

Assistant Commissioner Mick Willing said Friday night’s protest connected to the Black Lives Matter campaign was unauthorised because police had not been formally notified of it.

More than 1000 people have responded via the event’s Facebook page to say they are planning to attend Friday’s protest at Sydney’s Town Hall.

Mr Willing said police will deploy significant resources to enforce the existing health order, which bans mass gatherings

He told the Nine Network on Friday police would issue move-on directions to attendees and hoped to avoid any escalation to fines and arrests.

He also welcomed Thursday night’s Supreme Court decision to block a refugee rights protest scheduled for Saturday afternoon.

The rally, which was being organised by the Refugee Action Coalition, will also start at Sydney’s Town Hall.

“While the NSW Police Force recognises and supports the rights of individuals to exercise their right to free speech in normal circumstances, these are not normal circumstances,” Mr Willing said on Thursday.

“If people choose to break the law and attend this protest, police will not hesitate to take the appropriate action against them.”

Justice Michael Walton, who granted the NSW Police application for the protest to be declared a prohibited public gathering, said public health risks did not “outweigh the rights of public assembly and free speech”.

This week, NSW Police Commissioner Mick Fuller said people attending rallies could face $1000 fines.

NSW Education Minister Sarah Mitchell, meanwhile, announced on Friday that school sports could resume from the start of term three in late July.

Short school assemblies would also be permissible from Monday.

-AAP