Ayala has a long criminal history in the juvenile system, according to 8 News Now, while Keys was placed in the child welfare system at eight years old.
Keys' mother was charged with five counts of child abuse in 2016 after cops found her five children - aged two to nine - home alone without access to food, a knife left on the kitchen counter, and the house in a poor condition, according to the channel.
Police said they also tied the teens to at least three hit-and-run incidents the same day. They believe the slaying of Probst, a former police chief in Bell,
California, ended the spree.
Mother of teen charged with murdering LA police chief speaks out
two bored teens going nowhere. Now they have somewhere to go. Jail.