Evidence points to “workplace violence” in Half Moon Bay mass shooting, police say CBS NewsAt least 7 killed in Half Moon Bay mass shooting l GMA ABC NewsAlleged Half Moon Bay Killer Once Tried to Suffocate Co-Worker, Docs Say The Daily BeastShootout at Oakland, California gas station kills 1, wounds 7 people KABC-TVHalf Moon Bay Shooting: 7 killed in 2 shootings in California coastal community, suspect in custody ABC10