Several people have been killed and others wounded when a person with a gun opened fire in a light rail yard in San Jose, California, the county sheriff’s office says.
Santa Clara County Sheriff’s Deputy Russell Davis told reporters that there were “there are multiple injuries and multiple fatalities” and the shooter was now dead.
“I can’t confirm the exact number of injuries and fatalities,” he said.
He said he could not identify the shooter or confirm how they died.
The shooting took place a little before 7am local time at a light rail yard run by the Santa Clara Valley Transportation Authority near the city’s main airport.
“The shooter is no longer a threat and the facility has been evacuated,” San Jose Mayor Sam Liccardo wrote.
San Jose, a city with about 1 million residents, lies at the heart of Silicon Valley, a global centre of technological innovation and home of some of the biggest tech companies in the US.
Davis said he would share more information later.
A local ABC News affiliate reported that the building was not open to the public so the shooter would have needed employee access or to have broken in.
News footage of the yard showed a cluster of industrial hangar-like buildings adjacent to rail tracks.