The video was originally live streamed on Facebook and had also been shared on Twitter and Instagram but has been taken down from most platforms after being reported.
Moama Anglican Grammar sent a letter to all parents this morning warning them about a "distressing viral video clip doing the rounds on social media".
"We advise keeping your children offline for a few days if possible, and to heavily supervise all social media interactions until this content is removed," the letter said.
"The video may be embedded within other videos designed to appeal to children.
"Please be on the lookout for any emotions/behaviours that may be a bi-product of watching this material. Responses can be delayed after viewing violent materials such as this."
Echuca family therapist and counsellor Paul Medew said while parents had a right to be concerned about what their children could be exposed to, he encouraged them not to overreact with fear.
"A lot of kids, especially younger ones, will have no context to understand what they are seeing if they do see something. It may be seen as just another weird video on TikTok," he said.
"I would encourage parents to check with their kids if they have seen anything that has made them feel upset or that they thought was strange and to allow them to express their thoughts and feelings while you offer reassurance.
"As a parent your anxiety is naturally going to be felt by the child and may exacerbate any bad feelings they may have, so approach the situation calmly and rationally."
The Full Circle Counselling founder said the incident could be used as a good opportunity to discuss social media dangers in general.
"Social media is a reality in kids lives today and simply prohibiting it may not necessarily be the best approach," he said.
"Rather, I would encourage parents to take an interest in what their kids are doing online. Educate your kids and yourself about the potential dangers of online spaces and encourage open discussion with your kids.
"We can't protect our kids from every unpleasant experience but, as adults, we can help kids to make sense of it in a way that leaves them feeling comforted and secure."
The eSafety Commissioner is also encouraging people who encounter the content to report it to the social media platform they've seen it on.
eSafety advice is to exercise discretion in any communication about this incident and encourage others to do the same.
“In particular, please avoid raising the issue with students who may not have heard or been exposed to it,” a statement read.
- If you or anyone you know needs help, call Lifeline on 131 114, Beyond Blue on 1300 224 636, Kids Helpline on 1800 551 800, MensLine Australia on 1300 789 978 or headspace on 1800 650 890.
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