gh highway 12 at denverton, there was a crash around denverton road, taking you to larvey.not familiar with the names or the area, fairfield is over there, rio vista is over here in the north bay. hoping to get an update from chp, but that is the issue over in the north bay. getting over toward the carquinez bridge and benicia bridges, traffic flow is nice, commutes into and through contra costa county, highway 4 no slowing. walnut creek interchange an easy drive. upper east shore toward the been about be is fine as well. kari showed you the smoke in the shot from our bay bridge toll plaza camera. here in the north bay, southbound 101 moves nicely, an easy drive through san rafael, down across the going goilden g bridge. >>> 4:48, a lot of questions after a ceo was killed in his san francisco office and police say an employee may be behind it all. >> jean elle is at headquarters with details. >> it's unsettling, right next door to me, it's like -- not a great neighborhood, but i never had anything like that happen in this building that i know about. >> reporter: the office