Amid concerns about the Momo Challenge hoax, the Toronto District School Board sent out a letter to parents warning about the importance of online safety.The letter, dated March 1, reads: “While we would never want to perpetuate a hoax, given the significant amount of media coverage and the number of questions we are receiving from staff, parents and students, we felt this was an opportunity to remind parents and children about online safety in today’s digital world.”The Momo Challenge features a creature with an unusually large smile and dark, matted hair who encourages children to harm themselves and family members. (Twitter)The Momo Challenge began circulating last week online, depicting viral videos of creepy creatures that instruct children to isolate and harm themselves and family members. The videos feature a monster resembling the mother from Tim Burton’s Coraline, with an unusually wide grin, matted black hair and sunken eyes bulging out of its skin. The creature encourages kids to engage in dangerous actions, like turning on stoves or stabbing themselves in the neck.For all the hysteria, there appears to be no answer to how many of these videos actually exist, where they originate or who’s behind them — but it has police and parents’ attention. Fear of the challenge has been growing in Ontario, and on Thursday the OPP took to social media to use this as an “opportunity to educate kids on being safe online.”But for the time being, the challenge is believed to be a hoax, and none of the Toronto, Peel, York or Durham regional police forces have received any reports of anybody causing harm as a result of these videos.On Wednesday, YouTube released a statement addressing the Momo Challenge sightings, and said the media platform has seen “no recent evidence of videos promoting the Momo Challenge on YouTube.” The company praised Twitter users for “debunking” the challenge in a separate tweet. In its letter, the TDSB asks parents to talk to their kids about the implications of sending out inappropriate information, photos or videos, keep the computer in an open space and reminds them not to give out their personal information to strangers.Ryan Bird, spokesperson for the TDSB, emphasized in an interview “it’s just an opportunity to talk about online safety and how parents can help their kids.”Emerald Bensadoun is a breaking news reporter, working out of the Star’s radio room in Toronto. Follow her on Twitter: @twerk_vonnegutTOP STORIES, DELIVERED TO YOUR INBOX.