link.Keryn Knox and Cleo Proctor were last seen on Wednesday morning at their school and returned their on Thursday.Cleo's aunt, Nikkie McCann, told the News she thought the pair may have gone missing in relation to a social media challenge, where children try to get as many likes or views as possible on Tik Tok for staying away as long as possible.No more information is yet known about such a challenge.Have you heard anything more about this? Why not get in touch with the News via Facebook DM