The AP says the sheriff's deputies who evaluated UCSB killer Elliott Rodger during an April wellness check were well aware of his threatening YouTube videos but never bothered to actually watch them.

The sheriff's office told reporters an officer and officer-in-training were dispatched to Rodger's apartment after the county's mental health line called in a report that Rodger's mother and therapist were concerned by his online posts.

Police say he told the officers—who never actually watched the videos—that his uploads were just a way for him to express himself.

They questioned him for 10 minutes, found him to be shy and polite, and told him to call his mother. After the wellness check, he apparently removed the videos for fear he'd be discovered, reposting them shortly before the shooting began.

[image via AP]