The death toll from a shooting at a rail yard in San Jose, California has risen to nine after a victim who was taken to hospital in critical condition died, NBC Bay Area reported, citing authorities.
A worker at the commuter train yard in the Santa Clara Valley opened fire yesterday, killing eight people at the scene, before taking his own life.
The gunman and the nine people who died were all employees of the transit agency, which is situated near the city's airport, officials said.
The shooting took place in a section of the rail yard where workers perform maintenance on vehicles.
San Jose, a city of about 1 million residents, lies at the heart of Silicon Valley, a global technology hub and home to some of the US's biggest high-tech companies.
"These are, and were, essential workers," San Jose's mayor, Sam Liccardo, said of the victims.
President Joe Biden was briefed on the shooting, the White House said.
"What's clear, as the president has said, is that we are suffering from an epidemic of gun violence in this country, both from mass shootings and in the lives that are being taken in daily gun violence that doesn't make national headlines," White House spokeswoman Karine Jean-Pierre told reporters.
Yesterday's incident was the latest of at least nine deadly US mass shootings that have made national headlines in the past three months, starting with a string of attacks at Atlanta-area day spas in mid-March that claimed eight lives, and an attack days later that killed ten at a Colorado supermarket.
Last month, a former employee of an Indianapolis FedEx centre shot eight workers to death before taking his own life.
Earlier this month a man fatally shot his girlfriend and five other people before taking his own life at a birthday party in Colorado.
The United States saw at least 200 mass shootings in the first 132 days of this year, according to a report by the Gun Violence Archive, a non-profit research group that defines such incidents as those in which four or more people, other than the assailant, are shot, regardless of the number killed.
