A primary school in Dublin has sent a class home after one of the children tested positive for Covid-19.

The principal of the school confirmed to RTÉ's Today with Claire Byrne that there has been a case of the coronavirus.

The class has been sent home as a precautionary measure, based on public health advice, the principal said.

The school in question reopened after the summer holidays last Wednesday.

The child did not contract Covid-19 through transmission in the school, the principal added.

Minister for Education Norma Foley said she could not comment on a individual case and that she would not place the burden on a particular principal.

The minister said the guidance was clear on the matter and that public health officials should handle such communications.

Separately, a primary school in Co Armagh has sent a class home after a child tested positive for Covid-19. 

Principal of Jonesborough Primary School Donal Keenan said the child's classmates may be required to self-isolate for 14 days. 

In a letter to parents, which was posted on the school's Facebook page, Mr Keenan said a pupil in the primary 2/3 class tested positive for Covid-19 on Friday. 

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He said he had sought the most up-to-date advice from the Public Health Agency and told parents that their details have been passed on to the PHA, who will be in touch with them shortly with the latest advice on what to do next. 

He wrote: "All children in Primary 2/3 will be asked to self isolate for 14 days from the last date of contact (in school, Friday 28th August)."

Mr Keenan said the classroom has been closed for a deep clean, but other areas in the school are unaffected.