NBC 10 Philadelphia: US Customs Agents Didn't Tell Police of ‘Significant Encounter' With Calif. Rail Yard Shooter, Report Shows

A disgruntled employee who killed nine coworkers in San Jose earlier this year expressed hatred of the Santa Clara Valley Transportation Authority and dark thoughts about harming two specific people, a new report released by U.S. Customs and Border Protection reveals.

The information was gathered at San Francisco International Airport in 2016 when gunman Sam Cassidy returned from a trip to the Philippines. The redacted report raises new questions about why federal customs agents apparently never informed San Jose police or the VTA about what they labeled "a significant encounter."

Santa Clara County District Attorney Jeff Rosen said critical information about Cassidy was not shared with the San Jose Police Department. Rosen plans to meet with federal authorities in the coming weeks to find out why and make sure it doesn’t happen again.