The school attended by two young boys who were found dead with their mother in a Canberra waterway has offered counselling to students, while floral tributes are being laid where the bodies were discovered.
Pranav Vivekanandan, 8, and his younger brother, who has not been identified, attended Harrison School in the city's north.
Police divers removed the bodies of the boys and their mother, whom authorities are yet to name publicly, from Yerrabi Pond in Gungahlin on the weekend.
Officers said they did not believe anyone else was involved in the deaths, but their investigations were ongoing.
Harrison School executive principal Andy Mison sent a letter to parents on Sunday.
"It is with great sadness that I inform you two of our students and a parent died unexpectedly in a tragic incident this weekend," he wrote.
"Our thoughts are with their family and friends."
Mr Mison said the school had arranged for counselling and extra support to be available at the school from Monday.
'Stand together as a community'
Police had released a photo of Pranav on Saturday after they found the bodies of his mother and brother, in the hope he might still be alive.
However, his body was pulled from the water shortly before 11am on Sunday.
In his letter, Mr Mison said it was important for parents to allow their children to grieve.
"Today, and over the coming weeks, you may be concerned about your child's reaction or expression of feelings about this news," he wrote.
"These reactions and feelings may be part of the grieving process."
Mr Mison also urged the school community to respect the family's privacy.
"Right now, our role is to stand together as a community, support one another, and allow the family the time they need to grieve."
The ACT Coroner's office confirmed the three deaths had been referred for investigation.
A spokeswoman said it was not known whether there would be a hearing into the incident, as investigations were still in the early stages.
'This shouldn't happen'
Kay Beagle, who volunteers with the Friends of Yerrabi Pond, said the news of the deaths devastated her.
"We've got grandkids, so this sort of thing hits you hard because this shouldn't happen," she said.
Ms Beagle and the Friends of Yerrabi Pond have been coordinating floral tributes for the dead mother and her children.
"You can't help but see these lovely flowers and start to cry … it's very emotional," she said.
"Watching the people, the older people, the young families, the teenagers, everyone coming down because they are affected by it because it could be their neighbour, it could be their children."
