Teen, 18, in an ankle monitor 'snatches four-year-old boy from his bed, stabs him to death and dumps his body on Dallas street in random attack'
- Four-year-old Cash Gernon was found stabbed to death on a street in southwest Dallas on Saturday morning
- Darriynn Brown, 18, was arrested and charged with kidnapping and theft
- Brown is expected to face additional charges pending results of an investigation
- Police said the child suffered a violent death from an 'edged weapon'
- Cash was identified by a woman claiming to be his mother, who said Brown broke into her home early Saturday and snatched the child while he was sleeping
- The woman, who was not named, claimed her son was unknown to Brown and said she had no idea what led the man to target him