The Altadena Sheriff's station tells us (at 9:30 PM) that rescue teams have located some lost hikers up on El Prieto Trail/Brown Mountain area.  According to the watch commander, the hikers went up without flashlights and couldn't get down before dark.  Unknown at this time how they were reported as missing.  Per scanner traffic, the hikers have been approximately located, and  two teams are heading up to meet them and escort them out.  In the event they can't be escorted down, a chopper will be sent up at first light.