(Brainerd, MN)  --  Firefighters in Brainerd discovered an apparent meth lab in an apartment building early this morning after responding to a report of a fire.  Brainerd Police Department says as crews examined the area of the fire, they discovered several components used to manufacture methamphetamine.  All of the residents of the apartment complex were evacuated and will not be allowed to return until the necessary clean-up is completed.  The fire remains under investigation.