San Francisco: Nine people including the suspect were dead and several others injured in a mass shooting early Wednesday morning at a Valley Transportation Authority (VTA) light rail yard in San Jose, US state California, and the gunman was an unidentified VTA employee, the Xinhua news agency reported.
"I can't confirm the exact number of injuries and fatalities. But I will tell you that there are multiple injuries and multiple fatalities in this case," Russell Davis, a Santa Clara County Sheriff's deputy, told journalists, adding that the shooter was dead.
Police rushed to the light rail public transportation facility in San Jose -- a Silicon Valley tech hub of almost a million people -- after receiving reports of an "active shooter," the Santa Clara County Sheriff's Office said in a tweet.
It was not immediately clear if the shooter was a worker at the facility, but police said some of the victims were employees at the site.
The United States has a long and painful history of deadly gun violence, in the form of a steady daily toll of shootings as well as high-profile mass killings that have targeted schools, work places and shopping centers.