Federal and Alameda County arson investigators were among those trying to determine the cause of a huge blaze that destroyed a seven-story building under construction in Oakland on Friday, displacing 700 nearby residents and leading one City Council member to suggest the fire was deliberately set.No one was injured in the predawn inferno that sent flames and smoke high above the area of downtown Oakland previously known as Auto Row.A tall construction crane that had apparently been damaged in the fire and was swiveling out of control and in danger of collapsing caused fire officials to...…Federal and Alameda County arson investigators were among those trying to determine the cause of a huge blaze that destroyed a seven-story building under construction in Oakland on Friday, displacing 700 nearby residents and leading one City Council member to suggest the fire was deliberately set.No one was injured in the predawn inferno that sent flames and smoke high above the area of downtown Oakland previously known as Auto Row.A tall construction crane that had apparently been damaged in the fire and was swiveling out of control and in danger of collapsing caused fire officials to...WW…