The device that exploded last week at a Los Angeles County Sheriff's Department facility and killed three detectives was a grenade, confirmed by ABC News sources.
Sheriff Christina Corpus concealed key information from her assistant sheriff so he would arrest the head of the deputy's union amid labor negotiations and an investigation into her office.
The Riverside County civil grand jury uncovered 10 significant deficiencies in the Sheriff's Department's inmate screening process, leading to a violent felon being misclassified.