Ramos Sr., who traveled with family from Los Angeles after hearing of the explosions, said officials had not provided updates on their whereabouts. Syanna Ruiz, the 18-year-old girlfriend of Jesus Ramos, had also voiced frustration over the lack of information during a news conference the previous day.

Seven people remain unaccounted for days after multiple explosions obliterated a fireworks facility Tuesday in the Esparto area of Yolo County, Cal Fire said. The explosions and fire that followed caused nearby evacuations and power outages.

After what happened in Esparto and the large response that followed, CBS News California looked back at another large fireworks-related explosion in California to get an idea of how the investigation in Yolo County may develop.