By Steve Neavling
Still struggling to determine the cause of the deadly fire at a converted Oakland warehouse last week, the ATF has brought a special team of electrical engineers to the scene.
Today, the ATF also plans to send a team of mapping experts to the burned Ghost Ship, where 36 people were killed in the Dec. 2 fire, the East Bay Times reports. 
Prosecutors also have opened a criminal investigation and are considering charges ranging from murder to involuntary manslaughter.
Investigators believed the fire was caused by an electrical problem, but so far that is only a working theory.