A cluster of mobile homes is seen at the California Terra Garden, formerly Mountain Mushroom Farm on Thursday in Half Moon Bay, Calif. Santiago Mejia/San Francisco Chronicle via AP

REDWOOD CITY, Calif. — A farmworker charged in the killings of seven current and former co-workers at two Northern California mushroom farms admitted during a jailhouse interview Thursday that he committed the fatal shootings.

Chunli Zhao, 66, told KNTV-TV that he wasn’t in his right mind when he entered a mushroom farm where he worked in Half Moon Bay and shot and killed four people and seriously wounded a fifth. He then drove to a nearby farm where he worked previously and killed three more people, prosecutors said.

Chunli Zhao appears for his arraignment at San Mateo Superior Court in Redwood City, Calif., on Wednesday. Shae Hammond/Bay Area News Group via AP

Zhao said he was bullied and worked long hours on the farms and that his complaints were ignored, the station reported.

Eric Hove, one of Zhao’s attorneys, did not immediately respond to a phone message seeking comment.

He spoke in Mandarin with the television station reporter during a 15-minute interview at a county jail in Redwood City. Zhao said he has been in the U.S. for 11 years and has a green card. He said he has a 40-year-old daughter in China and lived with his wife in Half Moon Bay.

Zhao told the station he bought the gun used in the killings in 2021 and didn’t run into any obstacles when making the purchase. He was planning to turn himself in to authorities when he was spotted by deputies who arrested him Monday.

The shootings occurred Monday at California Terra Garden, previously known as Mountain Mushroom Farm, and nearby Concord Farms.

David Oates, a spokesman for California Terra Garden, confirmed Zhao lived on the farm along with his wife and said the farm has “no knowledge of any complaints by anyone on allegations of bullying.”

On Wednesday, the San Mateo County District Attorney Steve Wagstaffe charged Zhao with seven counts of murder and one of attempted murder.

The charges against Zhao include additional allegations that could result in the death penalty or life in prison without parole, though Gov. Gavin Newsom has issued a moratorium on executions. Among those allegations are that Zhao used a gun, caused great bodily injury and killed multiple people.

The coroner’s office named six of the victims: Zhishen Liu, 73, of San Francisco; Marciano Martinez Jimenez, 50, of Moss Beach, California; Aixiang Zhang, 74, of San Francisco; Qizhong Cheng, 66, of Half Moon Bay; Jingzhi Lu, 64, of Half Moon Bay; and Yetao Bing, 43, whose hometown was unknown. The charging documents identify Jose Romero Perez as the other person killed and Pedro Romero Perez as the eighth victim, who survived the shooting.

The state’s labor department is looking into possible labor, workplace safety and health violations at the farms where the shootings happened, a spokeswoman for the Department of Industrial Relations said Thursday. Newsom’s office said some of the farmworkers told him they made $9 an hour and lived in shipping containers. The state minimum wage is $15.50.

“The conditions farmworkers shared with the Governor… are simply deplorable. Many workers have no choice but to tolerate the conditions provided to them by their employers,” Newsom spokesperson Daniel Villaseñor said in a statement.