PHOENIX -- An 18-year-old has been sentenced on child abuse charges after her three little sisters were found inside the family's burning trailer in Guadalupe last year.
Per a plea deal, Sadie Johnson, 18, was sentenced Wednesday to 10 years in prison and lifetime probation for two counts of child abuse.
When firefighters responded to the fire on June 22, 2011, they found three young children inside the trailer. Two girls, ages 1 and 2, were bound and gagged with masking tape. A 4-year-old was also inside but was not bound.
Investigators said Johnson, who was 17 at the time, bound her sisters, put them in the bathroom then set the living room couch on fire while she was supposed to be baby-sitting.
Investigators said Johnson also fired a handgun inside the home.
The children were treated for smoke inhalation, but they were not seriously injured.
Police said Johnson initially told officers several versions of what happened involving an intruder and a possible accomplice but eventually confessed.
Investigators said Johnson had been upset with her mother for not giving her attention.