Authorities say a Florida school bus driver left a sleeping 6-year-old boy behind after finishing her route. He was later found wandering alone

© <p>Miami-Dade Corrections &amp; Rehabilitation</p>

Joann Johnson was arrested on a charge of negligent homicide in connection with the death of a 3-year-old boy last month, the Ascension Parish Sheriff's Office said

© <p>Ascension Parish Sheriff&#39;s Office</p>

Authorities say a Florida school bus driver left a sleeping 6-year-old boy behind after finishing her route. He was later found wandering alone

© <p>Miami-Dade Corrections &amp; Rehabilitation</p>