F or the third-straight day, investigations into last week's deadly explosion at a Los Angeles County Sheriff's Department training facility were centered in Marina del Rey on Wednesday.

Three veteran Los Angeles County Sheriff’s Department members assigned to the agency’s arson and explosives detail were killed Friday morning by an explosion at a department training facility, according to Sheriff Robert Luna.

Rachel Kim reports from Marina del Rey, where investigators on Wednesday served a search warrant connected to a deadly explosion that left three Los Angeles County Sheriff's Department deputies dead last week.