Authorities in Wilson County, Tennessee, have warned parents to be vigilant after a 24-year-old man was arrested for selling drugs to high schoolers via social media. Hayden Humphrey, known as Mr. Heisenberg on Snapchat, is accused of distributing drugs to at least 25 high school students. The Wilson County Sheriff's Office and DrugFree Wilco, the chairman of the organization that targets drug abuse among adults and teens, have urged parents to monitor their children's drug habits closely. Humphrey was indicted on 45 drug and weapons charges but later released after posting $100,000 bond.