The shooting that left four dead at a California mushroom farm on Monday was at least the second time an employee tried to kill a coworker on the property, records show.
Martin Medina, a manager at California Terra Garden, was charged with attempted murder after he threatened to kill another manager and then fired a shot into the man's trailer.
The bullet went through the trailer and into a neighbouring one that was home to Yetao Bing, one of the workers killed on Monday, a prosecutor told The Associated Press. No one was injured.
Law enforcement interviewed Bing's wife, Ping Yang, but it's not clear from those interviews whether Bing was at home during the shooting, said Sean Gallagher, chief deputy district attorney for San Mateo County.
Medina remains in custody on USD 5 million bail and appeared in court Monday for a preliminary hearing, hours before authorities say Chunli Zhao shot and killed four coworkers and wounded a fifth at California Terra Garden. Prosecutors say Zhao then drove to a nearby farm where he used to work and killed three more people.
The Bay Area News Group first reported last summer's shooting.
Zhao, 66, told KNTV-TV in a courthouse interview Thursday that he committed the fatal shootings. Zhao said he was bullied and worked long hours on the farms and that his complaints were ignored, the station reported.
