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By Vicente Vera

The Santa Clara County Sheriff’s Office released edited body camera footage on Tuesday from last week’s mass shooting at a VTA light rail yard in San Jose.

Though the FBI and other federal agencies cleared the scene of last week’s mass shooting, the Santa Clara County Sheriff’s Office has yet to release a motive for the shooter who killed nine workers before turning the gun on himself.

Coworkers described the shooter, 57-year-old VTA technician Samuel Cassidy, as disgruntled, and investigators are looking into his relationship with the transportation agency. A month before the massacre, Cassidy lost his temper over VTA’s radio system and complained about payroll and vacation issues at work, the Bay Area News Group reported.

“It is clear that this was a planned event and the suspect was prepared to use his firearms to take as many lives as he possibly could had the Sheriff’s deputies not made entry to stop his rampage,” according to sheriff’s office spokesperson Deputy Russell Davis.

The FBI’s evidence response team finished its work at the Guadalupe Light Rail Yard in downtown San Jose and surrounding area on Sunday, according to the Mercury News.

The Bureau of Alcohol, Tobacco and Firearms dispatched explosives detection dogs to the scene of the shooting after employees evacuated. While the dogs alerted handlers to the presence of explosives, federal officials said that they only discovered materials used to make explosives in Cassidy’s locker.

The sheriff’s office bomb squad also concluded no active explosives were found at the light rail yard.

On Friday, local law enforcement executed a final search of the shooter’s home on Angmar Court in San Jose—where a fire broke out around the same time as the shooting—to ensure they left no stone unturned. Police advised neighbors to vacate their homes.

Police found a “small amount” of explosives, but they were rendered safe and law enforcement cleared the neighborhood by 2 p.m.

“Units are now clear of Angmar Court. Residents and neighbors are welcome to return to their homes. Thank you for your patience while we processed the scene,” the San Jose Police Department said in a tweet.

The search of the shooter’s house turned up multiple cans of gasoline, suspected molotov cocktails, 12 firearms and about 20,000 rounds of various types of ammunition. Police also found three guns and illegal high-capacity magazines at the scene of the crime.

Contact Vicente Vera at or follow him @vicentejvera on Twitter.

The post Santa Clara County Sheriff releases body cam footage from VTA shooting appeared first on San José Spotlight.

This article was originally published by The San José Spotlight.

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