Half Moon Bay shooting suspect legally owned his gun and targeted specific people, authorities said. Here's what we know about him - CNN

“There was nothing that would have kind of elevated or raised us to have any concern with him at this time, prior to this incident,” the sheriff said, adding it was a case in which someone “snaps,” and “innocent people were killed.”

Zhao, who was arrested Monday, is expected to be arraigned on February 16, after a California judge approved a defense attorney’s request to postpone Wednesday’s hearing.

The attack was a “workplace violence incident,” Corpus said, adding Zhao targeted specific people and, though he had the opportunity to hurt others, “he went after and pursued” certain individuals.

Though authorities knew of no “preceding factors” that would have suggested Zhao would carry out the attack, county officials said, it wasn’t the first time he was accused of violence against someone he worked with, court records obtained by CNN show.

A judge issued a temporary restraining order against Zhao, which prevented him from getting too close to Wang and banned him from owning or buying a gun, according to the court paperwork.

Zhao lived at the first property, where four victims were killed, for about seven years, according to California Terra Garden spokesperson David Oates.