A Los Angeles Fire Department arson investigator checks through the rubble of a downtown L.A. industrial building. Police and fire officials are investigating an indoor growing operation found inside the building at 608 S. Santa Fe Ave., which was engulfed in flames. (Mark Boster / Los Angeles Times)
Fire investigators gather after the early-morning fire. After the blaze was extinguished by firefighters, investigators discovered equipment used for growing inside, said police spokesman Richard French. What was being grown is not yet known, he said. (Mark Boster / Los Angeles Times)
A Los Angeles firefighter soaks the smoldering debris. (Mark Boster / Los Angeles Times)
Firefighters prepare to exit the industrial building after putting out the morning fire. (Mark Boster / Los Angeles Times)
A firefighter monitors the sun from a ladder as the sun rises. (Mark Boster / Los Angeles Times)
A firefighter works in the burned-out building. (Mark Boster / Los Angeles Times)
