A late-morning fire alarm call to the Sam's Town Casino Hotel turned into a drug bust.  Firefighters responding to the call found a hotel room filled with smoke.  

Once they had cleared the smoke, they found what appeared to be the components of a meth lab, so they called police.  Agents with the Caddo-Shreveport narcotics unit found an old lab in the room and two active labs along with the components needed to make meth hidden in an air conditioning vent.

Agents arrested 30-year-old Dawn Meredith of Bossier city and charged her with creation and operation of a clandestine lab and criminal property damage.  They're looking for a second person who fled the scene.  The investigation continues.