A private investigation combing through the charred evidence which is in multiple locations. Nbc bay areas cheryl hurd joins us near the Oakland Airport where some of the debris is stored. Reporter well, the search for evidence will shift to a hangar here at the airport in a couple of weeks. The cause of the ghost ship fire is under investigation, but one attorney is determined to figure out exactly what caused that fire. It was december 2nd of last year. 36 people died during a concert and dance party in what is now known as the ghost ship fire. Now, an independent search for the cause of that deadly fire is under way. Were looking for evidence. Reporter Mary Alexander is the lead attorney in a civil suit representing 31 of the 36 people who died that night. Were looking for what might be here in the way of, for example, some cameras with photos and anything having to do with the fire pattern. Reporter sifting through all that burned debris is like trying to find a needle in a haystac