From this morning's papers
Good article 
"experts and charities have warned that the “Momo challenge” is nothing but a “moral panic” spread by adults."
"while there is no evidence that the Momo challenge has initially caused any harm itself, the ensuing media hysteria could now be putting vulnerable people at risk by encouraging them to think of self-harm"
"The NSPCC said there is no confirmed evidence that the phenomenon is actually posing a threat to British children and said they have received more phone calls about it from members of the media than concerned parents."
"A Samaritans spokesperson was similarly sceptical, saying: “These stories being highly publicised and starting a panic means vulnerable people get to know about it and that creates a risk.” They recommended media outlets read their guidelines on reporting suicide and suggested press coverage is “raising the risk of harm”."
"The rumour mill appears to have created a feedback loop, where news coverage of the Momo challenge is prompting schools or the police to warn about the supposed risks posed by the Momo challenge, which has in turn produced more news stories warning about the challenge."
"the recent coverage appears to have started with a single warning posted by a mother on a Facebook group for residents of Westhoughton, a small Lancashire town on the edge of Bolton"
Multiple police forces have issued formal warnings about the supposed risks of the Momo challenge, in addition to hundreds of schools. In one example, a Hull primary school posted on its Facebook page an unsourced claim that clips of the Momo challenge image are “hacking into children’s programmes”, with no evidence of what is meant by this claim.
"A YouTube spokesperson said the claims were completely false: “Contrary to press reports, we have not received any evidence of videos showing or promoting the Momo challenge on YouTube. Content of this kind would be in violation of our policies and removed immediately.”
Several outlets, including the Mirror and many local newspapers, have also claimed that the Momo game has been linked to 130 teen suicides in Russia, with no supporting evidence.
An identical claim was made in 2017 about a similar supposed viral suicide craze called Blue Whale, which was also linked to exactly 130 teen suicides in Russia. This figures came from a much-criticised single report in the Novaya Gazeta newspaper, with later reporting suggesting that not a single death could be conclusively linked to the game."