Seven people were killed in two related shootings Monday at a mushroom farm and trucking company in a coastal community south of San Francisco, and a suspect is in custody, officials said.

San Mateo County Board of Supervisors President Dave Pine says four people died at a farm and three at a trucking site on the outskirts of Half Moon Bay, about 30 miles (48 kilometers) south of San Francisco.

It wasn’t immediately clear how the locations were connected, though Pine said the suspect worked at one of the businesses. He described the suspect as a “disgruntled worker.”

California State Senator Josh Becker, who represents the region, said people were killed in separate shootings. San Mateo County Supervisor David Canepa tweeted that one shooting happened at a mushroom farm.

The San Mateo County Sheriff’s Office tweeted shortly before 5 p.m. that the suspect was in custody.

“There is no ongoing threat to the community at this time,” the sheriff’s office said.

Television footage from the area showed officers apprehending the man without incident.

Aerial television footage also showed police officers gathering evidence from a farm with dozens of greenhouses.

The shooting followed the killing of 11 people late Saturday at a Southern California ballroom.

“We are sickened by today’s tragedy in Half Moon Bay,” said Dave Pine, president of the San Mateo County Board of Supervisors. “We haven’t even had time to grieve for those who died in the horrific shooting in Monterey Park. Gun violence must stop.”

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