Santa Clara County District Attorney Jeff Rosen said it was his understanding the shooting happened inside the VTA building during a morning meeting. A horrible tragedy has happened today, and our thoughts and love go out to the VTA family, VTA Chairman Glenn Hendricks told a news conference.
Officials were also investigating a house fire that broke out shortly before the shooting, Davis said. Public records show Cassidy owned a two-story home where firefighters responded Wednesday morning.
Cassidy had worked for the VTA since at least 2012, according to the public payroll and pension database known as Transparent California. His position from 2012 to 2014 was listed as a mechanic. After that, he was a substation maintainer, the records said.
A mass shooting at a Valley Transportation Authority rail yard killed nine people, including the VTA employee who opened fire, according to authorities.