Samuel Cassidy, an employee at the Santa Clara Valley Transportation Authority (VTA) site in San Jose, opened fire at the site on Wednesday. He killed himself as police closed in, officers said.
The mass shooting was the California Bay area’s deadliest since 1993. So far this year, the US has recorded 233 mass shootings, the Gun Violence Archive reports. According to the local sheriff’s office, this was “a planned event and the suspect was prepared to use his firearms to take as many lives as he possibly could”.
Police announced on Friday that the gunman had also set his home on fire before the attack.
Guns were hidden in crawl spaces and doorways, a spokesman told reporters at a press conference. The home was “very cluttered”, he said.
Officers also said Cassidy had put bullets in a cooking pot on the stove, which detonated and set the house on fire. An FBI agent quoted by Reuters news agency said this blaze probably destroyed evidence which could have helped provide a motive for the shooting.
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