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, between Geary Boulevard and Anza Street, a Yolo County spokesperson said.

The home that was searched has the same address as the one where the fireworks company Devastating Pyrotechnics is registered. The explosion happened at the company's warehouse in the Yolo County town of Esparto. 

California business records show that the agent listed for the company is Kenneth Chee. A lawyer for Chee issued a statement. 

"Kenny Chee is innocent of any wrongdoing in connection with the Yolo fire. While the investigation is ongoing we will have no further public comment," said Douglas Horngrad, attorney for Kenny Chee. 

The Sacramento County Sheriff's Office was also at the home. In a statement, they said, their "EOD team was in San Francisco on a mutual aid request in relation to the Esparto fire."

The Yolo County Sheriff's Office and the San Francisco Police Department were also at the scene, according to a report by Hoodline.

CBS News Bay Area reached out to San Francisco police regarding the investigation and was told to contact the Yolo County Sheriff.

While Devastating Pyrotechnics has an active fireworks license in California as an importer and exporter, it did not have a local license to sell the fireworks nor a business license, according to the Yolo County Planning Commission Director.

CBS Sacramento has reported that a Yolo County Sheriff's Lieutenant, Sam Machado, was the listed property owner. His home was destroyed in the explosion. 

Yolo County officials say Machado is not involved in the investigation and is still employed with the department.   

An Esparto Fire Department volunteer firefighter, Craig Cutright, owned another company, BlackStar Fireworks, that had the same address listed as the site of the explosion. He was placed on leave from the fire department. 

In a sit-down interview with CBS Sacramento, the state fire marshal responded to those reports. 

"Our investigators have already begun to follow up on many of these pieces of information the media has reported on. Again, everybody wants answers. We want answers as well. But it takes a systematic approach to track those down. We don't want to say or do anything yet that may jeopardize that case," said State Fire Marshal Daniel Berlant.   

Devastating Pyrotechnics posted a statement to its website on July 2 regarding the deadly explosion.

"Our hearts and thoughts are with those we lost, their families, and everyone impacted in our community. We are grateful for the swift response of law enforcement and emergency personnel. Our focus will remain on those directly impacted by this tragedy, and we will cooperate fully with the proper authorities in their investigation."