A troubled teen has confessed to gunning down 17 people at his former high school in Florida, court documents showed, as the FBI admitted it has received a tip-off about the 19-year-old gunman yet failed to stop him.
A troubled teen has confessed to gunning down 17 people at his former high school in Florida, court documents showed, as the FBI admitted it has received a tip-off about the 19-year-old gunman yet failed to stop him.