HALF MOON BAY, Calif. — An agricultural worker killed seven people in back-to-back shooting sprees at two mushroom farms that had employed him in Northern California and the massacre is believed to be a “workplace violence incident,” officials said Tuesday as the state mourned its third mass killing in eight days.
Officers arrested a suspect in Monday’s shootings, 66-year-old Chunli Zhao, after they found him in his car in the parking lot of a sheriff’s substation, San Mateo County Sheriff Christina Corpus said.
