No injuries reported as fire in Tracy destroys medical equipment warehouse and authorities investigate cause A fire at a 1m sq ft warehouse complex was burning out of control in California early Friday as authorities fought to tamp the large blaze and began investigating the cause. The raging inferno was pumping thick black smoke up in billowing clouds as flame and a red hot glow were visible beneath from aerial images. The fire has destroyed the medical equipment warehouse in Tracy, in northern California, and prompted evacuations of other nearby facilities, with no injuries reported.