A San Francisco home was searched Tuesday in connection with the deadly Northern California fireworks explosion that killed seven people on July 1. Cal Fire's state fire marshal was leading the investigation at the Inner Richmond home on 2nd Avenue,

Detective Sina Ghaffarpour, a spokesperson for the Sacramento County Sheriff's Office, confirmed that members of his agency's bomb squad helped with the operation. "We were there on a mutual aid request,

Authorities raided a San Francisco home in connection with the deadly fireworks explosion that killed seven people in the Yolo County community of Esparto on July 1.