Human residues found on California’s fireworks explosion site

Local authorities in Northern California have discovered human remains at the site of a firework facility explosion days after the deadly incident first occurred.

Yolo County officials announced the gloomy discovery in a statement on Friday, July 4, three days after the explosion and the fire broke out on the evening of Tuesday, July 1. Workers from Yolo County Coroner’s Division opened the site after it was confirmed to be safe and discovered the remains during a recovery operation, according to one statement from several emergency agencies.

“At present, no positive identifications have been made,” an official wrote in the publication.

Seven people did not remain reported to comply with the incident, PEOPLE previously reported.

“Recovery efforts are expected to continue throughout the weekend when investigators, coroner personnel and fire crews work carefully and respectfully through the process,” the statement says. “The Coronies’ office has been in contact with the families of the previously reported missing.”

Murder fire and bombers from Cal Fire’s Office of the State Fire Marshal leads the ongoing investigation.

“Our hearts and thoughts are with those we lost, their families and all affected in our society. We are grateful for the quick response from law enforcement and emergency personnel,” said a spokesman for the company that runs the plant, devastating pyrotechnics, in an online statement.

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“Our focus will remain on those who are directly affected by this tragedy, and we will cooperate fully with the correct authorities in their investigation,” added spokesman.

Told Marisol Ramos NBC News Earlier this week that her three sons worked at the site and have been missing since the explosion occurred.

“Let’s do it,” Ramos said as she asked the authorities to let her look for her adult children. “I’m willing to go in … I want to search for my children.”